1.a blow to 给······造成了沉重的打击

例句：At its most far reaching, E.ON's decision is a blow to government plans to develop so-called clean coal technology, which would trap and store polluting emissions underground.

从长远来看，意昂公司的决策对政府所谓的洁净煤技术开发计划是一个打击。 这一技术就是在地下收集并存储污染的废气。

2.vow to do/vow sth/vow that 发誓

例句：But rather than vow to do something to get in shape (like jogging) and then hate it and not stick with it, find something you like to do.

但与其咬牙去做一些塑身运动（如慢跑），感觉厌烦，不能坚持，还不如找一些喜欢做的事情。

3.edge on/over sb/sth (微弱的)优势

例句：If you have an edge on a topic, don't waste it.

如果你在某一主题有优势，可不要浪费了。

4.corner the market (in sth) 用sth垄断市场(某种货品的交易)

例句：Lax environmental standards, along with low wages, has allowed Chinese producers to undercut competitors abroad and corner the market.

宽松的环境标准，低廉的工资使得中国生产商能以低价排挤外国竞争者，进而垄断稀土市场。