over:8.more than a particular time,amount,cost,etc.多于﹙某时间,数量,花费等﹚10.during sth 在···期间period:e.g.The factory will be closed down over a period of two years.这家工厂将在两年内关闭.－－...所以说 over 有表示 在...时间之内是吗是