They also made great propellants, foaming agents, and fire-retardants.

用它还可以制造很好的推进剂，发泡剂和阻燃剂。

Government issued a disaster declaration, after a foaming agent used in the coal preparation process get its way into the Elk River, affecting water supplies in the areas around Charleston.

用于洗选煤炭的起泡剂泄漏，污染了埃尔克河，影响了查理斯顿周围地区的水供应，之后政府发布了灾难宣告。

That's because the carbon dioxide in the beer forms bubbles that fluff up the batter, and foaming agents, which are certain proteins found in beer, keep those bubbles from bursting as fast as they normally would.

这是因为啤酒中的二氧化碳会形成泡沫，使面糊蓬松。且啤酒中特有的蛋白质——起泡剂——能让气泡以通常情况下的速度破裂。

That’s because the carbon dioxide in the beer forms bubbles that fluff up the batter, and foaming agents, which are certain proteins found in beer, keep those bubbles from bursting as fast as they normally would.

这是因为啤酒中的二氧化碳会形成气泡，使面糊变得蓬松，而发泡剂（啤酒中的某些蛋白质）可以防止这些气泡像往常一样快速破裂。