一刹那间，他慈善的假面扔掉，露出了他的真面目。 For a moment his mask of benevolence fell and the real man was revealed.
服这器官妙得很，它从你在早上起床的一刹那时就开始工作，而且直至你进入办公室为止，是不会停止（工作）的。 The brain is a wonderful organ; it starts working the moment you get up in the morning, and does not stop until you get into the office.
刹那间我想到汽车要碰撞。 For a fleeting moment I thought the car was going to crash.
我给你拍照的那一刹那，你不要动。 Hold yourself still for a moment while I take your photograph.
