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

如果您愿意， 冷冻保护剂基本上是一种医用级防冻剂。

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

然后，人体冷冻专家尝试用一种冷冻保护剂代替人体的部分水分，这种冷冻保护剂的作用基本上类似于人体防冻剂。