1.prevent from 防止

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5.+0G3+P)73。

2.based on 以…为基础

例句：All of the work we do is based on science.
我们所做的一切都是在科学的基础上完成的mMD8GG92H%。

3.amount of 大量的

例句：Don't be daunted by the amount of work still to be done.
不要因那大量待做的工作而失去信心(&qOic-_G4-。

4.act as 扮演…的角色

例句：That sofa also acts as a bed.
那沙发也可当床|ZHJy0f3m&avyZvcTO%。