It has long been a mystery how enough matter can reach these cosmic gluttons to swell them to such large sizes.

这个问题已经成为一个疑团，怎么会有如此充足的物质能够送给这些宇宙中的贪食客，让它们膨胀到这样大的尺寸。

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My son (5yo) is very sensitive to bug bites. The bites often swell up and takes a long time to heal.

我儿子（5岁）对虫咬很迟钝，常常会肿的很大，要很长工夫才干好。

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The Characteristics of the DAD product are swell and light in weight, 100 percent keeps the nutrition, it can store the fresh fruits for a long time.

DAD产品特点是膨松轻便，有效保留新鲜水果100%营养不流失。储存时间长。

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Castro also said that it's normal for a patient's face to swell up after being on a ventilator for a long time, though he also speculated the puffiness could be due to medications Chavez has been taking.

NPR: Photos Of Hugo Chavez Shown After 2-Month Absence