例句:A nation can become wiser and stronger as a result of change.
一个民族可能因变革而到更精明更强大。
2.keeps up with 保持
例句:She always keeps up with the latest style in hair - dressing .
她总是保持着最新发式。
3.go up 上涨；增加
例句:This article is bound to go up in price.
这种物品肯定会涨价的。
4.keen on 热衷于；追上
例句:I'm very keen on cycling.
我很爱好骑自行车。
