"saved by the bell" in Chinese (Simplified)
Definition
这个表达指的是在最后一刻被意外的事情救了出来，避免了危险或困难的局面。
Usage Notes (Chinese (Simplified))
这个短语是非正式的，经常带有幽默感。最初来自拳击比赛。当你因某种意外变化避免了麻烦时可以用，比如上课突然下课铃响了。通常不用在真正危险的情况下。
Examples
The teacher was about to call on me, but I was saved by the bell.
老师正要叫我，结果铃声**救了我**。
He was losing the game but was saved by the bell when time ran out.
他快要输了，但时间结束时**被铃声救了**。
Just as I was about to answer the hard question, I was saved by the bell.
就在我要回答难题的时候，**铃声救了我**。
Wow, I was totally saved by the bell there—I had no idea what to say next!
哇，刚才**被铃声救了**，我都不知道接下来要说什么！
Just before my boss asked me to explain the mistake, the fire alarm went off. Talk about being saved by the bell!
就在老板要我解释出错时，火警铃响了。真是**铃声救了我**啊！
It's Friday, and just as our meeting was about to get boring, we were saved by the bell when lunch was announced.
星期五，就在会议快要变得无聊时，宣布午餐**铃声救了我们**。