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train

train在教材中用作名词,意思为“火车,列车”。

train除了以上用法外,还有以下几种用法。

I’ve trained my dog to fetch my slippers. (train用作动词,意思为“培养,训练”。)

His telephone call interrupted my train of thought. (train of thought是固定短语,意思为“思路,思绪”。)

He trained his camera on the birds. (train sth. on / at sth. / sb. 意思为“用……对准或瞄准某事物或某人”。)