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重点讲解：
1. carry out 实施；执行；实行；
The programme is hard to carry out.
这个方案不好操作。
2. in need 贫困的；困难中的；
We are collecting money for families in need.
我们正在为有困难的家庭募捐。
3. as of 在…时；从…起；自…始；
As of this writing, no reply has been received.
到写这封信时为止，尚未得到答复。
4. aim to do sth. 致力于；旨在；以…为目标；
These exercises aim to counteract the effects of stress and tension.
这些训练旨在抵消压力与紧张的影响。
n. 贷款，借出，债权人
v. 借，供应货款，
