复数： teakettles

I hear the teakettle boiling .

我听到茶壶开了。

Complaining is as useful for people 's minds as a whistle vent is for a teakettle .

抱怨对人们头脑的作用如同一个烧茶壶的口哨阀门的作用一样。

To eliminate lime and mineral deposits in a teakettle , bring 3 cups full-strength white vinegar to a full boil for five minutes and leave the vinegar in the kettle overnight . Rinse out with cold water the next day .

要除掉水壶中的水垢，可以把3杯纯白醋（full-strengthwhitevinegar）倒入水壶中煮沸5分钟，等第二天再倒出来，然后用冷水冲洗水壶。