We are going to now go into the atom and try to understand the scientific basis for this observed behavior.

我们现在要讲讲原子,并试着去理解这个观察行为,的科学原理。

麻省理工公开课 - 固态化学导论课程节选

Scientists observe and try to describe and engineers try to design.

科学家们试着观察并描述事物,而工程师尝试着设计产品

耶鲁公开课 - 生物医学工程探索课程节选