the earth's surface与 the surface of the earth的区别在 Secientist say that much of____is covered with water?中为什么选the surface of the earth ,不能选the earth 's surface
问题描述：
the earth's surface与 the surface of the earth的区别
在 Secientist say that much of____is covered with water?中为什么选the surface of the earth ,不能选the earth 's surface
答