It must be broken down to urea.
它必须被分解成尿素。
It must be broken down to urea, which consumes energy.
它必须被分解成为尿素，这时也要消耗能量。
First, it must be broken-in to be an effective tool for catching balls.
首先，它必须是一个有效的工具，用来捕获球。
Before your team implements a theme, it must be broken down into smaller user stories.
在您的团队实现主题之前，必须将其分解为较小的用户情景。
A heart can be broken, but it must be supported by a smile.
一颗心即使支离破碎，却又笑靥扶持至久。
Someone has broken the window. I think it must be Tom who did it.
有人打坏了窗户，我想肯定是汤姆干的。
Someone has broken the window. I think it must be Tom who did it.
有人打坏了窗户，我想肯定是汤姆干的。
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