In bridge building we're well advanced in understanding what are the problems with building bridges and how do we overcome them?

在桥梁建设中我们十分清楚地了解,在造桥的过程中会遇到什么问题,以及如何克服这些问题

耶鲁公开课 - 生物医学工程探索课程节选

because with such a delicate and advanced area of science,

因为这部分的科学实验太精细太先进了，

生物克隆是热点问题 - SpeakingMax英语口语达人