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

如果您， 冻保护剂基本上是一种医级防冻剂。

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

然后，人体冻专一种冻保护剂代替人体的部分水分，这种冻保护剂的作基本上类似于人体防冻剂。