他留在大学完成博士学位,而他的朋友们都毕业了。

He stayed on at university to complete his PhD while his friends graduated.

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He stayed on at university to complete his PhD while his friends graduated.

stayed 是动词 stay 的过去式,stay 的意思是"停留、保持"。 on 在这里是副词,表示"继续、持续"的状态。 stayed on 表示"继续留在某个地方或保持某种状态",强调比预期或常规时间更长的停留。

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