1.a blow to 給······造成了沉重的打擊

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.

從長遠來看，意昂公司的決策對政府所謂的潔凈煤技術開發計劃是一個打擊。 這一技術就是在地下收集并存儲污染的廢氣。

2.vow to do/vow sth/vow that 發誓

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.

但與其咬牙去做一些塑身運動（如慢跑），感覺厭煩，不能堅持，還不如找一些喜歡做的事情。

3.edge on/over sb/sth (微弱的)優勢

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

如果你在某一主題有優勢，可不要浪費了。

4.corner the market (in sth) 用sth壟斷市場(某種貨品的交易)

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

寬松的環境標準，低廉的工資使得中國生產商能以低價排擠外國競爭者，進而壟斷稀土市場。