火箭发动机通常使飞行更快,但需要自携氧气。
A rocket engine typically goes faster but has to carry its own supply of oxygen.
否则本公司祗根据单据或产品 生产 日期提供壹年自携保养服务。
Otherwise, we offer one year return to base service upon invoice or product production date.
潜水员用自携式水下呼吸器把气球充满气,让它缓缓地把胳膊带到水面。
However huge the arm, it was fragile, and divers filled a balloon with air from a scuba mouthpiece to gently raise it to the surface.
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