According to Ben Urbonas, president of the Urban Watersheds Research Institute, these nutrient contaminants tend to be more of a problem in closed water systems,like lakes, where concentrations can build up.

VOA: standard.2010.08.04

And so with these basic building blocks, can you build up much more interesting things and they don't have to be static animations like this.

通过使用这些基础构建模块,你就可以迅速创造出更多有趣的东西,没必要像这个动画一样呆板。

哈佛公开课 - 计算机科学课程节选

It's also more spread out than New York. In New York, everything tends to be closer together and we build up.

它比纽约更为伸展。在纽约，所有的一切都密密麻麻，高楼迭起。

德克萨斯美女 - SpeakingMax英语口语达人

Professor Ahmed Abdul-Karim Saif, who teaches at the University of Sanaa, says that both the government and the Houthi rebels are trying to "improve their positions" in the build-up to what appears to be an imminent ceasefire.

VOA: standard.2009.10.11

There can be a supply of them, a storehouse of them that can build up in the body, and so day-to-day fluctuations become less of a problem with fat soluble then water soluble vitamins, because the body can go grab them from a storage depot, if you will.

从而在体内建立起一个供应源,一个脂溶性维生素仓库,这样一来,相比起水溶性维生素,脂溶性维生素的浓度不会每天剧烈波动,因为机体可以任意取用体内的储存

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选