what does it need to make a trip into space is careful preparations.

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what does it need to make a trip into space is careful preparations.
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what does it need to make a trip into space is careful preparations.
what does it need to make a trip into space is careful preparations.

what does it need to make a trip into space is careful preparations.
这句话中what引导的是一个主语从句,正确的说法应该去掉what后的does;翻译为去太空旅行需要谨慎的准备.