重点讲解:
1. buy up 大量买进,全部买下(土地、房产或商品);
The mention of price rises sent citizens out to their shops to buy up as much as they could.
物价上涨的说法使老百姓都涌进商店大量抢购商品 。
2. ups and downs 兴衰;浮沉;起落;悲欢;
We are bound to see some ups and downs along the road to recovery.
在经济复苏的过程中,我们一定会经历一些曲折起伏 。
3 pick up steam (信念、计划、项目等)变得越来越重要,开始发展壮大;
Just as the presidential campaign was picking up steam, riots exploded in Los Angeles.
正当总统竞选活动的声势日益壮大时,洛杉矶爆发了暴乱 。
4. on the lookout for 密切留意;小心提防;
The public should be on the lookout for symptoms of the disease.
公众应当留心这种疾病的症状 。
n. [气]同温层;最上层;最高阶段