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我们习惯喝温水,不喜欢喝太烫的水。有时候口渴了,不知道杯子里水的温度,当一大口喝进去时才知道太烫了。如果在杯子的边沿安装一
We used to drink warm water, do not like to drink too hot water. Sometimes thirsty, do not know the temperature of the water cup, when a large mouth to drink when they know too hot. If one is installed on the rim of the cup