他呼吸沉重而费力,显然是跑得太累了。

His breathing was heavy and labored, clearly exhausted from running.

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His breathing was heavy and labored, clearly exhausted from running.

labored 是动词 labor 的过去分词形式,labor 的意思是"费力地做、艰难地行进"。这里 labored 作为形容词使用,描述呼吸"费力的、吃力的"状态。

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