cold-blooded

体温不稳定的；变温的。

Having an unregulated body temperature; ectothermic.

毫无悔意或人性的

without compunction or human feeling

缺乏情感或怜悯心的；冷酷无情的。

Lacking emotion or compunction.

冷血的(指动物体温非内部调节的)

having cold blood (in animals whose body temperature is not internally regulated)

一种马:高大结实,通常温顺,适合重活。

Of a type of horse: tall and muscular, usually good-natured and suitable for heavy work.

指发动机或车辆难以启动,预热前运转不良。

Of an engine or vehicle: difficult to start; runs poorly until warmed up.