While nasa engineers routinely inspect each shuttle for dings and damage after each flight , they only replace equipment that really needs it .
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。
The sliding doors on the new taxi are meant to minimize door dings and the possibility of a bicycle rider ( or another car ) from plowing into an open door .