The Italian government is trying to fix the problem with the construction of a seven billion dollar system of moving flood barriers.

VOA: special.2009.04.22

So, if you look at any engineering system, the performance of that engineering system is a function of its design and its construction.

如果你们观察过工程系统，工程系统的性能就是,它的设计和构造的功能。

麻省理工公开课 - 固态化学导论课程节选