但在太空里，实际的工程操作给人留下一丝疑问。

But in space, it is the engineering that leaves room for doubt.

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要抓住太空碎片，这只机械手臂需要锁定具体目标，但在太空中，碎片是不断变换位置的。

To seize the space debris, the mechanical arm need to lock the concrete goal, but in space, debris is changing position.

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把人送入太空可能会成为头条新闻，但在科学方面并没有多少用处。

LAUNCHING people into space may make headlines but it does little useful science.

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