2--What does this mean? Let's find out by listening to an American English conversation.
 
1--I don't konw if I can take it anymore. First my car broke down.
 
2--Then I was late for work. And now my boss is mad at me for being late.
 
1--You'll have a better day tomorrow. Just keep your chin up.
 
2--"Keep your chin up" means to keep your spirits high, and remain cheerful in a difficult situation.
 
1--Keep your chin up.
 
2--This is an informal expression that can be used in any situation and everybody in America will understand you.
 
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注解：
 
1.conversation对话  
2.cheerful令人愉快的   
3.informal非正式的  

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译文：

1--如果你以前听过美式英语的话，你可能会听过这个“Keep your chin up”（保持斗志）。
2--这是什么意思呢？让我们从下面这段对话中来找找答案吧。
1--我不知道自己是否还能再忍受这一切。首先是我的车坏了。
2--然后我上班迟到了。现在老板对我的迟到非常生气。
1--你的明天会更好的。保持斗志就好了（Keep your chin up）。
2--“Keep your chin up”意思是要振作起来，在困境中保持积极乐观的心态。
1--保持斗志。（Keep your chin up）
2--这是一个非正式的短语，可以用在所有的情形当中，在美国的人都会明白你的意思的。