第二天补充地震对话 APPLE: All the earthquakes are mostly under the ground, if it is a small earthquake,we can't feel it very much on the ground, and small trees can fall down in the earthquake too."Do you know why?Apple asked. TEACHER: I know why, because the trees have roots and th ...

公园偶遇一美国老师，妈妈只听到二人谈论volcano 和earthquake,没太听懂他们说的，晚上回来问，说：volcano explode lava, a little pieces of stone come out of the volcano,and some rocks near the volcano are very light ,they can float on the water, "that's right", the teacher said.，汗啊，我只 ...