cool 英 [kul] 美 [kul]

adj.凉的;凉爽的;凉快的;使人感到凉爽的;

v.(使)变凉，冷却;冷静下来;

n.凉气;凉快的地方

例句：

The cylinder is cooled by a jet of water.

气缸可用喷水冷却。

Put the mixture somewhere cool to firm up.

把混合物放在一个地方冷却变硬。