At least 15,000 different species of wormy parasites use fish as a host.

至少有 15000 种蠕状于鱼类。

It's feasting on this oak tree, tucked away in a chamber on one of its branches.

它们于这棵橡树，藏在树枝的洞穴内。

The insects hitched rides on the black rats that flourished along trade routes, aiding the spread of the plague.

跳蚤于在贸易线上繁衍息的黑鼠身上，助长了瘟疫的传播。

RTS, S combines a circumsporozoite protein, which exists on the parasite's surface, with a protein from a hepatitis B vaccine.

RTS, S把存在于表面的环子孢子蛋白和肝炎B疫苗里的一种蛋白结合在一起。

Immie calls climate change a parasite. In the natural world, a parasite is an animal or plant that lives on another living thing and feeds from it.

Immie称气候变化为。在自然界中，是一种于另一种物并以它为食的动物或植物。

The word host has several meanings, but in biology it's a plant or animal that another plant or animal lives on as a parasite or uses for food.

宿主这个词有多种含义，但在物学上，它是指另一种植物或动物作为于或用作食物的植物或动物。

So the theory is that the parasitic worm was present in the grasses the woman ate, and that's how it got in her body.

因此，理论上认为，存在于该妇女吃的草中，这就是它进入她体内的方式。

When his organization, founded by former US President Jimmy Carter and his wife Rosalind, began spearheading the effort to rid the world of guinea worm in 1986, the parasite existed in 20 countries.

当他的组织由美国前总统吉米·卡特和他的妻子罗莎琳创立时，1986年开始带头努力根除世界上的麦地那龙线病，这种存在于20个国家。

Wolfe and his colleagues identified the microbial interactions by growing various cheese-dwelling fungi and bacteria in separate but adjacent dishes in the lab. The microbes couldn't touch-they could interact only via the volatile compounds they released.

沃尔夫和他的同事们（通过在实验室分离相邻培养皿中各种于奶酪的真菌和细菌）来确定微物之间的相互作用。微物之间不能相互接触，它们只能通过释放的挥发性化合物进行相互作用。