Support for this theory came from a study of yawning behavior in everyday life.
这一理论的支撑来自对日常生活中打哈欠行为的研究。
Frankly, no one can study for 10-11 hours everyday nine months in advance.
坦白说，没有人可以在预先九个月内每天持续学习10到11小时。
I study English everyday, My English is the worse in the class.
我每天学习英语，我的英语是班里最坏的。
I always put in two hours at my English study everyday.
我每天总要花两个小时学习英语。
I always put in two hours at my English study everyday.
我每天总要花两个小时学习英语。
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