diff --git a/model/alertrule.go b/model/alertrule.go
index c2ac896..cc1b55b 100644
--- a/model/alertrule.go
+++ b/model/alertrule.go
@@ -102,15 +102,15 @@ func (r *AlertRule) Check(points [][]bool) (maxDuration int, passed bool) {
 				hasPassedRule = true
 				continue
 			}
-			total, fail := 0.0, 0.0
-			for timeTick := len(points) - duration; timeTick < len(points); timeTick++ {
+			total, fail := 0, 0
+			for _, point := range points[len(points)-duration:] {
 				total++
-				if !points[timeTick][ruleId] {
+				if !point[ruleId] {
 					fail++
 				}
 			}
 			// 当70%以上的采样点未通过规则判断时 才认为当前检查未通过
-			if fail/total <= 0.7 {
+			if fail*100/total*100 <= 70 {
 				hasPassedRule = true
 			}
 		}
diff --git a/pkg/ddns/ddns.go b/pkg/ddns/ddns.go
index 78f0184..8c600e6 100644
--- a/pkg/ddns/ddns.go
+++ b/pkg/ddns/ddns.go
@@ -48,11 +48,11 @@ func (provider *Provider) UpdateDomain(ctx context.Context) {
 	for _, domain := range provider.DDNSProfile.Domains {
 		for retries := 0; retries < int(provider.DDNSProfile.MaxRetries); retries++ {
 			provider.domain = domain
-			log.Printf("NEZHA>> 正在尝试更新域名(%s)DDNS(%d/%d)", provider.domain, retries+1, provider.DDNSProfile.MaxRetries)
+			log.Printf("NEZHA>> Updating DNS Record of domain %s: %d/%d", provider.domain, retries+1, provider.DDNSProfile.MaxRetries)
 			if err := provider.updateDomain(); err != nil {
-				log.Printf("NEZHA>> 尝试更新域名(%s)DDNS失败: %v", provider.domain, err)
+				log.Printf("NEZHA>> Failed to update DNS record of domain %s: %v", provider.domain, err)
 			} else {
-				log.Printf("NEZHA>> 尝试更新域名(%s)DDNS成功", provider.domain)
+				log.Printf("NEZHA>> Update DNS record of domain %s succeed", provider.domain)
 				break
 			}
 		}
diff --git a/service/rpc/nezha.go b/service/rpc/nezha.go
index 98996fb..cd2ee7f 100644
--- a/service/rpc/nezha.go
+++ b/service/rpc/nezha.go
@@ -239,7 +239,7 @@ func (s *NezhaHandler) ReportGeoIP(c context.Context, r *pb.GeoIP) (*pb.GeoIP, e
 				}(provider)
 			}
 		} else {
-			log.Printf("NEZHA>> 获取DDNS配置时发生错误: %v", err)
+			log.Printf("NEZHA>> Failed to retrieve DDNS configuration: %v", err)
 		}
 	}
 
diff --git a/service/singleton/alertsentinel.go b/service/singleton/alertsentinel.go
index 125d810..ce92868 100644
--- a/service/singleton/alertsentinel.go
+++ b/service/singleton/alertsentinel.go
@@ -74,20 +74,20 @@ func AlertSentinelStart() {
 	AlertsLock.Unlock()
 
 	time.Sleep(time.Second * 10)
-	var lastPrint time.Time
+	lastPrint := time.Now()
 	var checkCount uint64
+	ticker := time.Tick(3 * time.Second) // 3秒钟检查一次
 	for {
-		startedAt := time.Now()
+		startedAt := <-ticker
 		checkStatus()
 		checkCount++
 		if lastPrint.Before(startedAt.Add(-1 * time.Hour)) {
 			if Conf.Debug {
-				log.Println("NEZHA>> 报警规则检测每小时", checkCount, "次", startedAt, time.Now())
+				log.Printf("NEZHA>> Checking alert rules %d times each hour %v %v", checkCount, startedAt, time.Now())
 			}
 			checkCount = 0
 			lastPrint = startedAt
 		}
-		time.Sleep(time.Until(startedAt.Add(time.Second * 3))) // 3秒钟检查一次
 	}
 }
 
diff --git a/service/singleton/notification.go b/service/singleton/notification.go
index cb63087..b040214 100644
--- a/service/singleton/notification.go
+++ b/service/singleton/notification.go
@@ -247,7 +247,7 @@ func SendNotification(notificationGroupID uint64, desc string, muteLabel *string
 
 		if !flag {
 			if Conf.Debug {
-				log.Println("NEZHA>> 静音的重复通知：", desc, muteLabel)
+				log.Println("NEZHA>> Muted repeated notification", desc, muteLabel)
 			}
 			return
 		}
@@ -256,7 +256,7 @@ func SendNotification(notificationGroupID uint64, desc string, muteLabel *string
 	NotificationsLock.RLock()
 	defer NotificationsLock.RUnlock()
 	for _, n := range NotificationList[notificationGroupID] {
-		log.Println("NEZHA>> 尝试通知", n.Name)
+		log.Printf("NEZHA>> Try to notify %s", n.Name)
 	}
 	for _, n := range NotificationList[notificationGroupID] {
 		ns := model.NotificationServerBundle{
@@ -268,9 +268,9 @@ func SendNotification(notificationGroupID uint64, desc string, muteLabel *string
 			ns.Server = ext[0]
 		}
 		if err := ns.Send(desc); err != nil {
-			log.Println("NEZHA>> 向 ", n.Name, " 发送通知失败：", err)
+			log.Printf("NEZHA>> Sending notification to %s failed: %v", n.Name, err)
 		} else {
-			log.Println("NEZHA>> 向 ", n.Name, " 发送通知成功：")
+			log.Printf("NEZHA>> Sending notification to %s succeed", n.Name)
 		}
 	}
 }
diff --git a/service/singleton/servicesentinel.go b/service/singleton/servicesentinel.go
index 8cbfd1b..b2ad2cf 100644
--- a/service/singleton/servicesentinel.go
+++ b/service/singleton/servicesentinel.go
@@ -359,7 +359,7 @@ func (ss *ServiceSentinel) worker() {
 	// 从服务状态汇报管道获取汇报的服务数据
 	for r := range ss.serviceReportChannel {
 		if ss.Services[r.Data.GetId()] == nil || ss.Services[r.Data.GetId()].ID == 0 {
-			log.Printf("NEZHA>> 错误的服务监控上报 %+v", r)
+			log.Printf("NEZHA>> Incorrect service monitor report %+v", r)
 			continue
 		}
 		mh := r.Data
@@ -383,7 +383,7 @@ func (ss *ServiceSentinel) worker() {
 					Data:      mh.Data,
 					ServerID:  r.Reporter,
 				}).Error; err != nil {
-					log.Println("NEZHA>> 服务监控数据持久化失败：", err)
+					log.Printf("NEZHA>> Failed to save service monitor metrics: %v", err)
 				}
 			}
 			serviceTcpMap[r.Reporter] = ts
@@ -450,7 +450,7 @@ func (ss *ServiceSentinel) worker() {
 				Up:        ss.serviceResponseDataStoreCurrentUp[mh.GetId()],
 				Down:      ss.serviceResponseDataStoreCurrentDown[mh.GetId()],
 			}).Error; err != nil {
-				log.Println("NEZHA>> 服务监控数据持久化失败：", err)
+				log.Printf("NEZHA>> Failed to save service monitor metrics: %v", err)
 			}
 		}
 
diff --git a/service/singleton/singleton.go b/service/singleton/singleton.go
index c46471b..96ca6a5 100644
--- a/service/singleton/singleton.go
+++ b/service/singleton/singleton.go
@@ -112,7 +112,7 @@ func RecordTransferHourlyUsage() {
 	if len(txs) == 0 {
 		return
 	}
-	log.Println("NEZHA>> Cron 流量统计入库", len(txs), DB.Create(txs).Error)
+	log.Printf("NEZHA>> Saved traffic metrics to database. Affected %d row(s), Error: %v", len(txs), DB.Create(txs).Error)
 }
 
 // CleanServiceHistory 清理无效或过时的 监控记录 和 流量记录