Our short-term memory, or working memory, is what we use when we cram for a test.
我们的短期记忆，或者工作记忆，是我们在为了考试死记硬背时会使用到的。
But, at night our biological clocks seems to turn off the proteins involved in forming long term memories, which is why it's best not to cram for a test all night.
但晚上我们的生物钟似乎将有关形成长期记忆的蛋白质切断了。所以考试前通宵抱佛脚并不是好主意。
A lot of Ph.D. students get depressed when they reach the boundary, because there's no longer a test to cram for or a procedure to follow.
很多博士生在达到边界的时候都很沮丧，因为他们从未被一项考验占据如此多的精力，或者从未坚持一个如此艰难漫长的过程。
A lot of Ph.D. students get depressed when they reach the boundary, because there's no longer a test to cram for or a procedure to follow.
很多博士生在达到边界的时候都很沮丧，因为他们从未被一项考验占据如此多的精力，或者从未坚持一个如此艰难漫长的过程。
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