重点讲解：
1. in season
应季；当季；旺季；
eg. These are the dog days; watermelons are just in season.
现在是伏天，西瓜正当令ci-=f5)4(B。
eg. Hotels are often full in season.
在度假旺季，旅馆经常客满|0Q_)T*;OecCr。
2. be used to do sth.
过去常常；过去曾做某事；
eg. Things ain't what they used to be.
现在情况不比从前了OK=4!1f1-bf,1i*CL。
eg. I used to live in London.
我曾经在伦敦居住过LhWB]KyFZL;7lMRgPz。
3. be familiar with
熟悉；熟知；
eg. Tom is quite familiar with the author.
汤姆很熟悉那位作家^zb;P0;*;Az!。
eg. We won't go wrong, because I'm quite familiar with the streets here.
我们不会走错路的，因为我对这儿的街道非常熟悉REDI6_4%D2。
4. build up
逐步的增长；
eg. There has been a build-up of troops on both sides of the border.
边境两边都在集结兵力YNJ=j,c6xn34x1[uAqc。
eg. The disease can also cause a build up of pressure in the inner ear leading to severe earache.
该疾病还会引起内耳的压力增加，从而导致剧烈的耳痛;R|FW(JHrKy7e;3。
5. in the long run
从长远来看；
eg. In the long run, it is aneconomy to buy good quality goods.
从长远观点来看，买质量好的物品还是合算的|eCuCFx[Fnk=Ox。
eg. They will win out in the long run.
从长远看他们总会胜利L6u8@iQpKgYRvW。
6. even though
即使；尽管；纵然；
eg. Even though he tried, he still lagged behind other runners.
尽管他努力了，仍落在其他赛跑者之后@S)l3r~AhlYChs[P+。
eg. He never apologizes, even though he knows that he is in the wrong.
他从不道歉，即使他自知错了11YjR5%(#BjFc3e2oht5。