重点讲解：
1. at least （数量）至少，不少于；
We need at least 24 hours' notice of cancellation.
如欲取消，请至少提前24小时告知。
2. in terms of 在…方面；从…角度看；根据…来说；
The data is limited in terms of both quality and quantity.
这份资料在质量和数量上都很有限。
3. be going to do sth. 将要，即将（发生）；
I think it's going to be successful.
我认为这事会成功。
4. be able to do sth. 可以…的，能够…的；
He should be able to lead a perfectly normal life.
他应该能够过上完全正常的生活。