• NASA said its astronaut candidates had to be between twenty-five and forty years old and in excellent health.

    VOA: special.2009.06.10

  • They must be in excellent physical condition.

    VOA: special.2010.08.20

  • You should be safe. Excellent.

    VOA: standard.other

$firstVoiceSent
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进来说说原因吧 确定