热水壶的英文是：kettle，表示酒店和家庭常用的 ，插电使用的烧水用的壶。
保温壶的英文是： thermos或thermos flask，表示方便携带，旅游外出的。
保温瓶的英文是：thermos bottle，表示家庭用体积比较大，存放热水的。
kettle 英 [ˈketl] 美 [ˈkɛtl]
造句：
1、I filled the kettle while she was talking and plugged it in. 她说话间，我把水壶灌满并插上了电源。
2、Well then, I'll put the kettle on and make us some tea. 好吧，我来烧壶水，我们沏点茶喝。
3、I'll put on the kettle for tea. Or boil up some coffee. 我要烧壶水沏茶，或者煮些咖啡。
4、I'll put the kettle on and make us some tea. 我去烧壶水给大家沏茶。
5、She emptied both their mugs and switched on the electric kettle. 她把他们俩的杯子倒空，烧上了电水壶。
thermos （英 ['θɜːmɒs] 美 ['θɝməs] ）
造句：
1、A sturdy thermos is ideal for hot coffee or soup, and it'll hook onto your backpack or book bag. 保温瓶是携带热咖啡和汤的理想工具，你可以将它挂在背包或书包挂钩上。
2、At work, a blonde notices her that cubicle mate has a thermos. 上班的时候，金发美女注意到和她一起的同事有个保温瓶。
3、Complete line of thermal insulation and pots, jars , pots and thermos flask. 完整系列的隔热及保温壶、广口瓶、锅子及保温瓶。
4、But don’t replace your water thermos with coffee. 但也不要轻易就用咖啡取代你保温瓶里的水。
5、Tea always tastes horrid out of thermos flasks. 从保温瓶里倒出来的茶总是很难喝。
thermos bottle
造句：
1、Pimping , be like a thermos bottle. 很小的，像个热水瓶一样。
2、Another is a super-efficient thermos bottle for preserving and safely dispensing perishablerefrigerated vaccinations for long periods of time far from the grid. 另一个例子是超高效的热水瓶，储存易变质的冰冻疫苗，可用于偏远地区疫苗的长途运输存储。
3、There is boiled drinking in the thermos bottle and cold drinking water in the carafe. 热水瓶里有热开水，冷水瓶里有凉开水。
4、The pollution of thermos bottle corks has been the potential source of infection in the hospital. 开水瓶塞的污染已成为院内潜在的感染源。
5、The manufacture cost of the utility model is also the same as the single softwood or plasticthermos bottle stopper. 当应用本实用新型时，其制造成本与单一的软木或塑料保温瓶塞几乎一样。