漫游者将满载着设计得重量轻、体积小的科学仪器，在火星着陆。
The rover will land on Mars packed to capacity with scientific gadgets designed to be as light and as small as possible.
这个年轻的设计者告诉《工程师》杂志说这个设计的优势在于可以无级变速、高效、生命周期长，而且重量轻。
The young designer told the Engineer that the advantages of the new design included seamless shifting, higher efficiency, longer chain and sprocket life, as well as improved weight distribution.
汽车工程师们一直都很清楚，设计小排量、重量轻的汽车是满足不断提高的燃油经济性标准最理想的途径。
Engineers have long known that designing smaller, lighter vehicles is an ideal way to meet tighter fuel-economy standards.
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