他本不该把车开得那么快。
He oughtn't to have been driving so fast.
你怎么这么快就过来了？
How ever did you get here so quickly?
热带地区黑夜来得快。
Night descends quickly in the tropics.
我们的货物周转快。
We have a fast turnover of stock.
孩子比大人学得快。
Children learn faster than adults.
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