1.come from 来自；来自于

Many of the clothes come from the world's top fashion houses.
这些服装中有很多出自世界顶级时装设计公司。

The final word will still come from the Secretary of State.
最后仍然要由国务卿来定夺。

2.aim at 瞄准；针对

Republican strategists are taking particular aim at Democratic senators.
共和党的战略家正尖锐地攻击民主党的参议员。

His criticism stuck out a mile to aim at us.
他的批评显然是针对我们。

3.carry out 执行；实行；实施

The indisputable fact is that computers carry out logical operations.
不容置疑的事实是，电脑执行逻辑操作指令。

The Navy is to carry out an examination of the wreck tomorrow.
海军明天将对失事船只进行细查。

4.account for 解释；说明

Ministers should be called to account for their actions.
部长们应该对他们的行为作出解释。

The social services account for a substantial part of public spending.
社会福利事业占了一大部分的公共支出。