重点讲解：
1. at least
至少，起码；
eg. Aim to have at least half a pint of milk each day.
目标是每天至少喝半品脱的牛奶。
eg. They didn't actually like the magazine very much, but they bought it or, at the least, borrowed it from each other.
他们其实并不怎么喜欢这本杂志，但还是会买，或至少会互相借着看。
2. think of
想到；想起；想出；
eg. Nobody could think of anything to say.
谁也想不出什么话说。
eg. Ask yourself what the folks in Peoria will think of it.
想一想皮奥里亚的人会如何看待这件事。
3. as well
也；还；
eg. Andy's face paled with disappointment; perhaps with anger as well.
安迪的脸色由于失望而变得苍白，也许还掺杂着气愤。
eg. Often life is much slower outside the big cities, as is true in other countries as well.
大都市外面的生活步调往往是缓慢得多，这在其他国家也是真的那样。
4. less than
（用在数字或数量前）少于，低于，比…少；
eg. Motorways actually cover less than 0.1 percent of the countryside.
高速公路的实际覆盖面积还不到农村地区的0。1%。
eg. Less than a half hour later he returned upstairs.
不到半个小时，他又跑上楼来
