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on與off例句:
Sam was flicking a flashlight on and off
薩姆啪啪不停地把手電筒開了又關。
She was the ideal American teenager, both on and off screen.
無論是在熒幕上還是在生活中,她都是人們心目中完美的`美國青少年。
She fascinated him, both on and off stage.
不管是臺上還是臺下的她,都讓他著迷。