深呼吸后,他用力将空气从肺部排出。

After taking a deep breath, he forcefully completed the expulsion of air from his lungs.

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After taking a deep breath, he forcefully completed the expulsion of air from his lungs.

expulsion 是名词,来自动词 expel(排出、驱逐)。前缀 ex- 表示"向外",词根 -pel 表示"推动",合起来就是"向外推动"的意思。expulsion 特指"排出、驱逐的行为或过程",这里指将空气从肺部排出的动作。

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