释义:a. 主要的;n. 校长,负责人;主角;资本
举例:
1. Through it all Richard Nixon moved asif he were himself a spectator, not the principal.
尼克松自始至终表现得像旁观者,而不是主角。
2. How much interest will there be on aprincipal of $5000?
5000美元本金的利息是多少? occupy
助记:oc(再次)+ cupy(抓)→抓住地盘→占领
释义:v. 占领,占据;使忙碌
举例:
1. They are occupying themselves ingrowing their own food.
他们自己正忙于种植自己所需的粮食。
2. Even small aircraft occupy a lot ofspace.
即便小飞机也会占用很多空间。