Discovery was hours from launching on it final voyage to the ISS on November 5 when technicians found a hydrogen leak and later a series of long cracks on the shuttle's external fuel tank.
一开始技术人员发现有氢气泄漏，后来在外部燃料罐上发现了一些裂缝，当时是11月5日离发现号前往国际空间站的发射前的几小时，这是它的最后一次飞行。
Communication cracks out your mind when you’re constantly plugged in and makes it difficult to concentrate developing good health.
当你经常开机时，沟通会影响你的心智，使得你很难集中精力去保持健康。
When something falls through the cracks, it is forgotten or overlooked.
疏忽了某事，指这件事被忘记了，或是忽略了。
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