Dust, smoke and ash engulf buildingsaround the World Trade Center in New York City, after the collapse of bothtowers on September 11, 2001.

北塔坍塌时尘烟以及灰吞没了世贸中心周围的建筑。

youdao

For example, in the presence of bacterial food, the ancient ancestors turned on the expression of genes that allowed them to crawl around and engulf their prey.

例如，有细菌性食物时，古代的祖先会打开基因的表达，这些基因允许他们爬过去并且吞噬他们的捕食。

youdao

The trouble is that, while cells within cells are common in eukaryotes, which often engulf other cells, they're vanishingly rare in more rigid bacteria.

问题是，虽然胞内同生在真核生物中非常常见，这往往造成吞噬其他细胞，但是在较为硬质的细菌难以察觉。

youdao

European countries have been trying to stem the tide of a near financial meltdown that started in Greece, but is now threatening to engulf other heavily indebted countries.

VOA: standard.2010.05.26

When they do that they can actually engulf the bacteria in a process called phagocytosis and break them down into antigens.

免疫细胞确实是将细菌整个吞进了肚内,这一过程称为吞噬作用,并将细菌分解成小抗原

耶鲁公开课 - 生物医学工程探索课程节选

The US government has no chance of success as the igniting flames which will engulf America in Afghanistan are already visible.

CENTERFORSECURITYPOLICY: The new, improved Obama

But often they just engulf people in debts that they cannot pay.

BBC: Ed Miliband promises councils powers to ban payday lenders

In cats, it increased the ability of specialised cells to engulf harmful bacteria, and in chickens, antibody responses were increased.

BBC: Algae may boost immune system