The laser tracking system would work by giving space craft and satellites, which are able to be maneuvered, time to move out of the way of an incoming chunk of debris.

VOA: standard.2010.07.24

We're going to take these general topics and talk about how they work in the nervous system and the immune system next time.

在下节课我会讲这些内容以及,配体-受体系统在神经系统和,免疫系统中的作用原理

耶鲁公开课 - 生物医学工程探索课程节选

Soil was being eroded and wasted along the Eastern seaboard, and they were using up the great soils of the Mississippi Valley and over time that slave system just somehow wasn't going to work out.

东部沿海地区的土地因被侵蚀而荒废掉,密西西比河谷地区的土地资源即将被耗尽,但就在这种情况下,奴隶制依然能维持南方的经济

耶鲁公开课 - 美国内战与重建课程节选