build up,set up,put up

uild up :
1. 逐步建立
2. 逐渐积聚,集结
3. 增进,增强
1. We made a strategic withdrawal, so that we could build up our forces for a renewed attack.
我们作了一次战略性退却,以便我们能积蓄力量再次进攻.
2. Tourist: When was it build up?
游客：它什么时候建成的?
3. Then I begin to build up speed.
然后我会开始加速.

set up :
1. 竖立,架起,建造
2. 开业,开始经商
3. 创立,建立,为…作准备
1. The slump on Wall Street set up a chain reaction in stock markets around the world.
华尔街金融滑坡引起世界股票市场的连锁反应.
dict.cn
2. Choose the computer to set up.
请选择要安装的计算机.
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3. Joe was set up as our example.
乔被树立为我们的榜样.
put up :
1. 张贴
2. 举起
3. 提供,提名,提出
1. I can't believe he'd do a thing like that on his own. He must have been put up to it by some of the older boys.
我不相信他会主动干那种事,一定是有些年龄大的男孩子叫他干的.
2. Put up your site for reviews!
把你的网站公开,让大家来评论!
3. They put up a tent by the fire.
他们在火堆旁搭起了一个帐篷.