She discovers the course is impossible, so she opts to drop it in favor of a simpler math class because, at the end of the day, all she needs is any math credit.
她发现这门课太难，于是决定放弃而选择一门较为简单的数学课。因为到头来，她要的只是一个数学学分。
Which, by the way, was not 286 consecutive hours ago, because that's physically impossible--and you watched them sleep through the math class you have together.
不过不是连着286个小时，那个在生理上不可能，而且当你们在数学课上相遇时他总会在课上睡着。
By the time I got to math class, I was exhausted because I had stayed up all might studying.
我去上数学课的时候累极了因为我一晚上都在熬夜学习。
I took my math class twice because I flunked my final exam.
我修了两次同样的数学课，因为我期末考试不及格。
Besides, I have to go to the English and math training class, because I am weak in the two subjects.
除此之外，我还要去英语和数学培训班，因为我这两科比较弱。
I didn't go to math class, because I knew enough and had read ahead, and I placed within the top 10 people in the nation on an aptitude exam.
我不去上数学课，因为我知道得足够多了，并且上课前我已经学习过了，最后我在一个能力考试中排名全国前十。
I didn't go to math class, because I knew enough and had read ahead, and I placed within the top 10 people in the nation on an aptitude exam.
我不去上数学课，因为我知道得足够多了，并且上课前我已经学习过了，最后我在一个能力考试中排名全国前十。
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