be well before 既往体健
BE MASKED BEFORE COATING 涂布前遮罩 ; 涂装前被屏蔽
Be worse than before 比以前更差 ; 会比以前更糟
Be prepared before class 上课前要有准备 ; 课前要有准备
It won't be long before 过不了多久 ; 用不了多久
If vaccine supplies are limited, then the committee says two groups of children should be vaccinated before other children.
VOA: special.2009.08.05
That has to do with what kind of human-being you want to be before you die.
而与你在死之前到底想做,一个什么样的人有关。
Well the power points will be available before, say for this lecture it will be before so that you can use them in class.
幻灯片其实课前就能下载,这样你上课时就能用到。
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