cooladj.凉爽的；凉的；冷静的；冷漠的vt.(使)变凉；(使)冷却；(使)冷静vi.变凉；冷静下来n.凉爽；冷静；凉快adv.冷静地cool tone冷色调

1. The cooling unit hasn't come on yet.
   冷却装置还未工作。
2. The heat had to be dissipated by elaborate cooling systems.
   热得用复杂的冷却装置散发。