They might have managed this by taking in foreign genetic material.

它们可能是通过吸收外来的遗传物质以避免变异熔断。

Think of the contact lens as foreign material in your eye.

把隐形眼镜当成是放入你眼中的外来物质。

But is filling the cavity with a foreign material really the best treatment?

但是，利用异物填补牙洞真的是最佳治疗方案吗？

The more ancient manufacture of Lucca was likewise carried on with foreign materials.

更古老的卢卡制造同样使用外国材料进行。

Vaccines work by presenting the immune system with the foreign material of a pathogen.

疫苗通过向免疫系统提供病原体的异物来发挥作用。

The silk manufacture, though altogether employed upon foreign materials, has lately obtained the same advantage.

丝绸制造业虽然完全使用外国材料， 但最近也获得了同样的优势。

Manufactures introduced in this manner are generally employed upon foreign materials, being imitations of foreign manufactures.

以这种方式引进的产品， 一般都是采用国外材料， 仿制国外产品。

Foreign materials are, upon this account, sometimes allowed to be imported duty-free; spanish wool, for example, flax, and raw linen yarn.

因此，外国材料有时可以免税进口； 西班牙羊毛， 例如亚麻和亚麻原纱。

Lymphoid organs remove foreign material from the lymph to keep it from entering the bloodstream, and act as lookout points for the body's immune defenses.

淋巴器官从淋巴中移除异体物质，阻止它们进入血流，也发挥免疫防御岗哨的作用。

Your immune system naturally contains antibodies, which help to fight off any foreign material that your immune system doesn't recognize, such as viruses and bacteria.

你的免疫系统自然含有抗体，它有助于你的身体对抗任何自身免疫系统无法识别的外来物质，如病毒和细菌。

Leukocytes protect us against foreign substances. Some engulf foreign material by the process of phagocytosis;others function as part of the immune system.

白细胞保护我们免受外来物质的侵害。有些是通过吞噬过程吞噬异物;其他的细胞作为免疫系统的一部分参与。

I'm talking about macrophages, the big, hungry guard cells that patrol your connective tissues and eat bacteria, foreign materials, and even your own dead cells.

我说的是巨噬细胞，巨大而饥饿的保卫细胞，巡逻你的结缔组织，吃掉细菌，外来物质，甚至你自己的死细胞。