“省去了变速箱，也就意味着不需要更换机油了，”通用电气公司的工程师加里·默瑟介绍说。

"Get rid of the gearbox, and now you don't have to change the oil," says ge engineer Gary Mercer.

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此外，内尔森的三维组织结构构建的技术可以有效地辅助工程师更换器官。

In addition, her techniques for building three-dimensional tissue structures could ultimately be used to help engineer replacement organs. — Jocelyn rice.

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在NASA的工程师对航天飞机进行飞后弯折与损坏检查时，只会更换必须更换的零件。

While NASA engineers routinely inspect each shuttle for dings and damage after each flight, they only replace equipment that really needs it.

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