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.

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。

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The breaking waves left the beach covered with foam.

浪花四溅，海滩上满是泡沫。

《牛津词典》

Have functions such as escaping from the gas, dehydration, taking off foreign substance, taking off acid, breaking emulsification, getting rid of a foam.

具有脱气、脱水、脱杂质、脱酸、破乳化、除泡沫等功能。

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Foam insulation damaged the shuttle's heat tiles during launch, which led to Columbia breaking apart upon re-entry.

VOA: standard.2009.07.16