例句:I got an abscess so he took the tooth out.
我牙龈脓肿，所以他就把那颗牙拔掉了。 

2.in effect 实际上；生效

例句:In effect, growth is contingent on improved incomes for the mass of the low-income population.
事实上，发展有赖于大量低收入人群收入的增长。

3.interest rate 利率

例句:The Finance Minister has renewed his call for lower interest rates.
财政部长再次呼吁降低利率。

4.crack down 镇压；取缔

例句:The police ran a sting operation to crack down on illegal guns.
警方展开诱捕行动以严打非法枪支。