重点讲解:
1. be based on 以…为基础;
The study was based on data from 2,100 women.
这项研究基于从2,100名女性那里收集来的资料 。
2. spread out 相隔很远的;分散的;
The Kurds are sp read out across five nations.
库尔德人散居在 5 个国家中 。
3. center on (使)以…为中心;(使)注意力集中于;
The topic centers on the crisis in these two countries.
话题以那两个国家的危机为中心 。
4. carry out 实施;执行;实行;
He pledged that there would be no whitewash and that the police would carry out a full investigation.
他保证将不会有任何掩饰,并且警方将进行全面调查 。