英语单词“train on(或upon)”的翻译、意思、用法、释义-英汉词典

单词	train on(或upon)
释义	train on(或upon)1.■锻炼得有所改善2.■(用枪、望远镜等)对准，瞄准：He trained his gun on the enemy.他把枪对准敌人
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