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weightlessness

美['weɪtləsnəs] 英['weɪtləsnəs]

n. 失重

近义词：airiness，lightness，buoyancy，fluffiness，flimsiness，

Noun

the property of being comparatively small in weight;
"the lightness of balsa wood"

用作名词(n.)

Astronauts in flight must adjust to weightlessness.宇航员在飞行中必须适应失重状态。
When a sportsman rises high into the air and an astronaut travels around the orbit, they will be in weightlessness.运动员的腾空和宇航员在轨道上的飞行都是处于失重状态。

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