weightlessness

n [U]: become accustomed to weightlessness in a spacecraft 已适应宇宙飞船中的失重状态.

weep for, weep out, weep over, weeping, weepy, weevil, wef, weft, weigh, weigh-in, weighbridge, weighing-machine, weighing-scale, weight, weight-lifter, weight-lifting, weightily, weightiness, weighting, weightless, weighty, weir, weird, weirdly, weirdness, weirdo, welcome, welcome to, weld, welder, welfare, welfare state, welfare work, well, Well Tempered Clavichord, well up in, well-advised, well-aimed, well-appointed, well-balanced,