A : I can't figure out why he is so keyed up?
B : I think he was feeling that he would lose his face.
A : Why do you say so?
B : He talks big. He told us he could finish the task on time. But now, it seem that wasn't the case.
A : Oh, that's it.

A : 我不明白他为何那么紧张？
B : 我想他是感觉到要丢脸了吧。
A : 你为什么这样说？
B : 他说大话。他告诉我们他能按时完成这项任务。但是现在看起来不是那么回事。
A : 喔，是啊。


figure out：理解，明白
例句：I can't figure out why he is buttering me up. 
我不明白为什么他要巴结我。 
She couldn't figure out who put a tail on her. 
她不明白谁派人盯她的梢。 

keyed up：十分紧张，十分兴奋
例句：Naturally, you were keyed up when you went on the platform for the first time. 
你第一次登上讲台感到紧张是很自然的。 
She was keyed up over her impending operation. 
她为了将进行的手术而心中忐忑不安。 
The crowd was keyed up for the football match. 
群众为这场足球赛而欢欣鼓舞。 
Live performance is the best! I am still keyed up . 
现场演出是最棒的！ 我仍兴奋不已。 

lose one's face：出丑，丢脸
例句：His careless work made him lose face with his teacher. 
他工作疏忽使他在老师面前丢脸。 
If Tom doesn't keep his promise, he'll lose face. 
如果汤姆不信守诺言，他就会丢面子。 

talk big：吹牛，说大话；放空炮
例句：We dislike those who talk big and do nothing. 
我们不喜欢那些专讲大话而不做事的人。 
He loved to talk big and brag about a variety of things to other people. 
他喜欢说大话，很多事情都喜欢跟人乱掰一通。 
You can't believe more than half of what he says, he always likes to talk big. 
他的话一半你也别相信，他们总是爱吹牛。