a period of time 一段时间
- When you train over a period of time your heart will grow in size, allowing it to pump a larger volume of blood with each stroke (or pump).
当你运动训练过一段时间以后,你的心脏体积将变大,每一次跳动(或撞击)可以输送更多的血。 - Though it now seems well-controlled, for a period of time before he knew whether or not it would be, my patient told me he found himself in great need of comfort.
尽管这个问题现在看上去还控制得很好,而在一段时间以前,他还不知道情况是否能在控制中,我的病人告诉我他自己现在非常需要安慰。 - It varies with each individual when to rest for a period of time and let those input language materials processed in the brain according to the individual character.
究竟什么时候该休息一段时间,让输入的语言材料在大脑内部按照个人的特点进行加工处理,这完全是因人而异的事情。
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