1.illegal immigration 非法移民
例句:Action against illegal immigration is one of the Force's top priorities.
反非法入境是警方最优先处理的工作之一.
2.a series of 一系列
例句:Boom! Boom! Boom! A series of explosions shook the valley.
轰!轰!轰! 一连串爆破声震撼山谷。
3.go back 返回
例句:Someone is waiting for you at home. You'd better go back right now.
你回去吧, 家里有人找你。
4.presidential candidate 总统候选人
例句:The presidential candidate backwatered on several promises when he got into office.
总统候选人就职后背弃了好几项承诺。