shut off与keep off与turn off区别
keep off,keep是保持的意思,off是离开一段距离,keep off就是保持离开的状态。turn是转动,turn off就是通过转动开关使其停止运行。shut off,同理是关闭的意思。 keep off 的意思是“远离”，例如： Keep your hands off me! 别碰我！ Danger! Keep off! 危险！别靠近！ I'm trying to keep off fatty foods. 我在尝试不吃高脂肪的食物。 所以，所谓屏蔽手机...