The cryoprotectant is basically a medical-grade anti-freeze, if you like.

您愿意， 冻保护剂基本上是医级防冻剂。

The cryonicists then try to replace some of the body's water with a cryoprotectant, which basically acts like human antifreeze.

然后，人体冻专家尝试冻保护剂代替人体的部分水分，这冻保护剂的作基本上类似于人体防冻剂。