prevent vt. 1.阻止,阻挡;制止;妨碍 (from)。 2.预防;〔古语〕先做,预先,迎合(愿望),预先应付(问题);【宗教】引领。 Rain prevented the game. 下雨妨碍了比赛。 prevent him from going=prevent his [him] going 阻止他走。 prevent sb. from injuring himself 预防某人弄伤自己。 vi. 妨碍;阻止。 if nothing prevents 如果没有什么妨碍的话。
A team at the harvard school of public health could not find any studies showing whether the time - consuming process of x - raying carry - on luggage prevents hijackings or attacks . they also found no evidence to suggest that making passengers take off their shoes and confiscating small items prevented any incidents 研究人员称,目前没有看到有研究表明,对旅客行李费时的x光检查避免了劫机或恐怖袭击行为,让旅客脱鞋并没收小件物品也没有避免意外事故。