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Tom:
Hey, would you like to have a drink after work? 
嘿，下班后要去喝一杯吗？
Bob:
Sorry, I have to leave at once.
对不起，我得马上就离开。
Tom:
You have been hurried for a long time. What’s happening?
你这段时间都很匆忙。发生什么了？
Bob:
I’m taking night classes at college.
我在大学上夜校。
Tom:
Wow, great. Why didn’t you say anything before?
哇，很好啊，为什么你之前都什么都没说？
Bob:
I don’t want you to know I didn’t graduate from an undergraduate course.
我不想你知道我不是本科毕业。
Tom:
That’s nothing. Many people in our company graduated from vocational school.
这没什么啊，在咱们公司很多人都是专科毕业的。
Bob:
I didn’t know before. I want to improve my English. I am studying English in night classes.
我之前不知道。我想要提高我的英语，我在夜校学习英语。
Tom:
English is really important because our company is a foreign trade corporation.
英语的确很重要，因为我们公司是外贸公司。
Bob:
That’s the reason. I have to go, and the class is going to start.
就是这原因，我的走了，课要开始了。