One night, Amanda was chatting on the Internet while Jennifer did her calculus homework.
有一天晚上詹尼佛在写微积分作业，阿曼达则是上网聊天。
I had been doing a lot of trig homework for a calculus class I was taking in undergrad and this number appears a lot.
大学上微积分课时我做了许多三角学的作业，作业中这个数经常出现。
I had been doing a lot of trig homework for a calculus class I was taking in undergrad and this number appears a lot.
大学上微积分课时我做了许多三角学的作业，作业中这个数经常出现。
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