平时,我们常常会见到这样的情景:年轻的妈妈给孩子喂奶前,先用开水冲奶,再用奶瓶装好奶,然后滴在手背试试温度,确定不会烫嘴时才放心喂给孩子吃。这样复杂的程序,其实就是一个问题———不知道冲开后奶水的温度。要解决这个问题,就要发明一种带温度计的奶瓶。这种奶瓶的特点就 In peacetime, we often see such scenes: Before the young mother feeds her baby, first flush her milk with boiling water, then use a bottle to hold her milk, and then drop it on the back of the hand to try the temperature. If it is determined that the mouth will not be hot, it is safe to feed the child. eat. Such a complicated procedure is actually a problem—I don’t know the temperature of the milk after being flushed. To solve this problem, it is necessary to invent a bottle with a thermometer. The characteristics of this bottle