The drop-out rate among students is currently one in three.現在學生的輟學率是三分之一。You'd be crazy to drop out.你要退學真是發瘋了.Research suggests that children whose parents split up are more likely to drop out of high school.研究表明，父母...
這是一樁偶發的事件.It was quite an accident.事實已經很清楚，這件事不是偶發的，它并不是一起孤立的事件。It became very clear that the incident was not just an aberration, it was not just a single incident.克雅氏病通常以“個例 ” 形式而且在50歲以下的人中偶發.In its common'sporadi...