build up
1. 在…盖满房子，建房子，以建筑物覆盖；高楼迭起：
My neighbourhood has really been built up.
我的周围一带确实盖满了房子。
The area has been built up since I moved.
自我搬家以来这个地区就不断地盖起了新房。
2. 把…建造得更高大：
to build the wall up
把墙砌得更高些
3. (用砖等)堵塞(门、窗等)：
The doorway in the west side was built up by the neighbour's house.
西面的门口被邻居的房子阻塞了。
4. (交通)阻塞，(交通)越来越拥挤，(车辆)拥挤起来：
During the summer holidays,traffic builds up along the roads to the coast.
每到暑假，在去海滨的路上车辆就拥挤起来。
5. 逐步建设；逐步建立；逐步形成：
They came to this country and built up the family business.
他们来到这个国家，逐步建立了这份家业。
6. 增强，增长，增进，增加，加强；增强
自尊心(或信心)；使人有信心：
She built up my confidence.
她树立了我的信心。
7. 增强…的体力，增进…的健康，锻炼(身体)：
She went for dance and built up her health.
她去跳舞增进了健康。
The weightlifting built up his body.
举重增强了他的体质。
8. 集结，聚集；逐渐积累(资金等)，逐渐积累到(to):
The tension between the two countries built up to a climax.
两国间的紧张状态渐渐达到了顶峰。
to build up a fund
积累基金
9. 提高…的价值(或声誉等)；为…大做广告，大肆宣扬(或宣传)以使著名，称赞，夸奖，鼓吹，吹捧；使更具吸引力，把…吹捧成(into):
They built her up into a great success.
他们把她捧成获得极大成功的人。
They built up the product by advertising.
他们用广告宣传产品。
10. 激励，鼓动，使人鼓起劲
11. 加燃料使烧得更旺
12. 【电工学】使(发电机或电路)的电压或电流增加
13. 给人留下好的印象
追问从10到13也给我写一下例句吧谢谢
追答10 to build sb. up 使某人振奋精神
11 They built up the fireplace by adding fuel. 他们加燃料使壁炉的火烧得更旺。
12 The currency was built up by increasing power. 压力增大使电流加大。
13 The charity work has built up his image among ordinary people. 慈善工作使他的公众形象提升。