这些超级大国承诺要在其武器运载上保持数量相等。
The superpowers pledged to maintain symmetry in their arms shipments.
这是一款运载工具的演示品,身高100米却超级苗条,在未来10年中,美国宇航局计划用它把新的宇航员乘坐舱送入轨道。
The super-slim, 100m-tall launcher is a demonstrator for the vehicle Nasa plans to use in the next decade to take its new astronaut crewship into orbit.
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