the moon's crust is almost four times thicker than the earth's crust这句话是说月壳厚度是地壳厚度的5倍,还是4倍?
问题描述:
the moon's crust is almost four times thicker than the earth's crust
这句话是说月壳厚度是地壳厚度的5倍,还是4倍?
答