“奏效”造句
那种方法不
奏效的时候，他们有时会想到要寻求帮助。
When that doesn't work they sometimes have the sense to seek help.
这些方法中有一些会
奏效，其他的则行不通。
Some of these methods will work. Others will not.
当局相信那些安全措施已经
奏效。
The authorities believe those security measures are already paying off.