/bɔɪl ||; bɔɪl/verb1 [I] (used about a liquid) to reach a high temperature where bubbles rise to the surface and the liquid changes to a gas （指液体）沸腾: Water boils at 100°C. 水的沸点是100摄氏度。The kettle's boiling. 壶里的水开了。
2 [T] to heat a liquid until it boils and let it keep boiling 烧开；煮开: Boil all drinking water for five minutes. 水煮开后再滚五分钟才能喝。
3 [I,T] to cook (sth) in boiling water 放在开水里煮: Put the potatoes on to boil, please. 请把马铃薯放上去煮沸。to boil an egg 煮鸡蛋
4 [I] (used about a person) to feel very angry （指人）动怒: She was boiling with rage. 她在大发雷霆。
boil down to sth to have sth as the most important point 归结起来:
What it all boils down to is that you don't want to spend too much money. 归根结底一句话，你不想花太多钱。 boil over 1 (used about a liquid) to boil and flow over the sides of a pan （指液体）沸腾并溢出，潽: You let the soup boil over. 你把汤煮潽了。
2 (used about an argument or sb's feelings) to become more serious or angry （指争执）加剧；（指人）怒上加怒