at / with the push / touch of a button used to emphasize how easy a machine is to use because it is controlled by pushing a button只要按一下按钮〔用于强调机器容易操作〕:•The instrument can gauge a distance with the push of a button.这台仪器只要一按按钮就能测出距离。⇒as bright as a button at BRIGHT(7) |