航天飞机以及空间站上的人员还将执行多个实验，包括测试用机器人给卫星补充燃料的技术，并试验一个回收太空废水的新方法。

The shuttle and space-station crews will also perform several experiments, including testing technology to refuel satellites robotically and trying out a new method for recycling wastewater in space.

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五角大楼曾多次表示，空天飞机仅是一个技术“试验床”。

The Pentagon has repeatedly said that the space plane is simply a “test bed” for other technologies.

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对于C919，Comac将必须掌握成千上万零件精确的的整合，建立一个可靠的维修网络，然后说服各航空公司相信未经充分试验的飞机。

With the C919, Comac will have to master the precise integration of thousands of parts, develop a reliable maintenance network and then persuade airlines to trust the largely untested jet.

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