因为一整天坐在书桌前,他的背开始疼了。

His back began to ache from sitting at the desk all day.

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His back began to ache from sitting at the desk all day.

ache 是动词,意思是"持续地隐隐作痛",通常用来描述身体部位的不适感。这个词特别强调那种持续性的、不太剧烈的疼痛感。

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