n. 
天,宇宙飞行
近
词
n. 联想词
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exposal,
expose,
exposé,
exposed,
exposedness,
exposer,
exposing,
exposit,
exposition,
expositive,
相似单词
spacecraft,
spaced,
spaced out,
spaced-out,
spacefarer,
spaceflight,
space-hold,
space-image,
space-independent,
spacelab,