The Friz thinks a field trip is in order to explore what teeth do and why they have different shapes.
弗莱多老师认为，要想让同学们了解牙齿的作用、牙齿为什么有这么多不同的形状，就必须带他们去进行一次实地考察。
The Friz thinks a field trip is in order to explore what teeth do and why they have different shapes.
弗莱多老师认为，要想让同学们了解牙齿的作用、牙齿为什么有这么多不同的形状，就必须带他们去进行一次实地考察。
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