一个叫罗伯特·普拉斯的飞行员发明了滚轮行李箱，并且在1991年取得专利权。

A pilot named Robert Plath invented the wheeled suitcase, and patented it in 1991.

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在2005年在哥伦比亚号遇难后的第一次发射中，太空梭受到了另一飞行威胁：在起飞过程中一只秃鹫撞入燃料箱。

In 2005, during the first launch after the Space shuttle Columbia disaster, a shuttle was threatened by another flying menace: a vulture that smacked into the external tank during takeoff.

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正当美国宇航局将工作重点放在如何防止泡沫绝缘材料脱落时，今年年初人们又开始担心燃料箱外侧集结的冰是否也会对航天飞机的飞行安全构成威胁。

While Nasa's focus was on how to prevent the insulating foam breaking off, concerns also emerged earlier this year about the build-up of ice on the outside of the fuel tank.

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