a.

1. 冷血的
   Snakes are cold-blooded.

   蛇是冷血动物。

2. 【口】怕冷的
   The old couple was cold-blooded and kept their house terribly hot.

   那对老夫妇很怕冷，所以把房间烧得热得要命。

3. 冷酷的，无情的
   The cold-blooded murder shocked the town.

   残忍的谋杀案使全城的人震惊。

4. 不动感情的，冷静的
   He gave a cold-blooded account of the accident.

   他冷静地叙述了这一事故。

adj.

1. denoting animals whose body temperature varies with that of the environment (e.g. reptiles and fish); poikilothermic.
2. without emotion; deliberately cruel.