&&地球上70%是水30%是陆地&&用英语怎么说到底用by还是with

70% of the Earth surface is covered by water and the remaining 30% by land

70 percent of the earth's surface is water and 30 is land

70 percent of the earth's surface is covered by water and the other 30 percent by land.
by,with都是对的,被动式加by肯定是没错,cover+with也是搭配,所以两个都可以的

70 percent of the Earth is covered with water and 30 percent with land.