释义 |
Phr V train upon trains, training, trained train sth on/upon sb/sth to aim something, especially a gun, in the direction of someone or somethingAnti-aircraft guns were trained on the jets flying overhead.
phrasetrain upon ! Train upon is more formal than train on and is mostly used in writing. train sth on/upon sb/sth to aim a gun, camera etc at someone or something and keep it pointing at them: All the TV cameras and microphones were trained on him, but Mellor refused to comment. The man stood beside the sofa, the black revolver trained on her.
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