这家医院使用冷冻技术保存精子样本。

This hospital uses ___cryotechnology to preserve sperm samples.

他签署了协议，死后将进行人体冷冻保存。

He signed up for ___cryopreservation after death.

医生建议使用冷冻疗法治疗他的疣。

The doctor suggested ___cryotherapy to treat his warts.