NASA needs good weather to launch Ares I-X because engineers need to see the rocket flight all the way through first stage separation, which will mark the end of the test.

NASA需要好天气来发射战神I-X，因为工程师们要在第一级火箭分离前观测火箭飞行全过程，第一级火箭分离标志着试飞的结束。

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Mark an X in the box beside the name of the candidate whose actions you can live with.

在候选人的名字旁边的投票箱里注明个X字样，表明你支持那个候选人的举措。

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The red X error icon is decorated with a question mark to show that help is available for a particular error.

带问号的红色 X 错误图标表示这个错误有相关的帮助。

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An X mark is legal in most states as a valid signature.

FORBES: Taxes from A to Z: X Is For X-Mark (Signature)

Network Magic can detect a network outage and mark it with a big red "X" on the topology diagram showing you where the outage occurred, and gives you some indication of how to fix it.

ENGADGET: The Family is the Network: Pure Networks' Network Magic wants to make things simple

X-rays revealed a nondisplaced fracture of the fifth metacarpal, confirming what his teammates feared, said first baseman Mark Teixeira.

WSJ: New York Yankees' Alex Rodriguez Breaks Hand