diff --git a/examples/main.go b/examples/main.go
index 655becd..0d28879 100644
--- a/examples/main.go
+++ b/examples/main.go
@@ -49,7 +49,7 @@ func main() {
 
 	runTimes := 1000
 
-	// Use the common pool
+	// Use the common pool.
 	var wg sync.WaitGroup
 	for i := 0; i < runTimes; i++ {
 		wg.Add(1)
@@ -63,13 +63,13 @@ func main() {
 	fmt.Printf("finish all tasks.\n")
 
 	// Use the pool with a function,
-	// set 10 to the size of goroutine pool and 1 second for expired duration
+	// set 10 to the size of goroutine pool and 1 second for expired duration.
 	p, _ := ants.NewPoolWithFunc(10, func(i interface{}) {
 		myFunc(i)
 		wg.Done()
 	})
 	defer p.Release()
-	// Submit tasks one by one
+	// Submit tasks one by one.
 	for i := 0; i < runTimes; i++ {
 		wg.Add(1)
 		p.Serve(int32(i))