2. 专升本
  3. Once out of the earth’s gravity, the astronaut is affected by the problem of ______ (weight).

Once out of the earth’s gravity, the astronaut is affected by the problem of ______ (weight).

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问题 Once out of the earth’s gravity, the astronaut is affected by the problem of ______ (weight).
选项
答案weightlessness
解析
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