1.prevent from 制止

例句：Active cure of swoon patients was important to prevent from complications.
积极救治晕厥患者，对预防并发症有重要意义;^orL|xb#qB*9,s9。

2.drop out of 从……当中退出

例句：I had injured my leg and had to drop out of the race.
我伤了腿，只好退出竞赛bE-K^=kZz=Um。

3.no matter 不论怎样

例句：No matter how hard everyone tried to persuade him, he just wouldn't listen.
不管大家怎么劝说，他高低不听V|NjD6Le%OT%PL^xFO。

4.front-runner 领跑者

例句：Neither of the front-runners in the presidential election is a mainstream politician.
总统选举中的两位领先者都不是主流政治家VQMs.J.ayKmY;Y。