他彻底检查了汽车,确保所有零件都正常工作。

He checked the car thoroughly to make sure all parts were working properly.

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He checked the car thoroughly to make sure all parts were working properly.

thoroughly 是形容词 thorough(彻底的、全面的)加上副词后缀 -ly 构成的副词形式,意思是"彻底地、全面地"。

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