All of their architectural innovation allowed the Romans to become early adopters of sewers and plumbing systems that would actually carry human waste away from their homes, so they had some degree of sanitation.

他们所有建筑创新使罗马人水道和管道系统早期使用者，这实际上会把人类排泄物带离他们家，所以他们有一定程度卫生设施。

Rain for the earth, rain to bring up the falling water table, rain to make crops grow, rain for the grass that ties the earth and place.

雨水滋润了大地，雨水使地水位上升，雨水使庄稼生长，雨水使草地紧密。

Like Europa, Enceladus has an undersurface ocean, kept liquid by Saturn's ferocious tides, which squeeze the moon as it orbits the planet.

像木卫二一样，土卫二也有一个地海洋，土星凶猛潮汐力在卫星公转时挤压它，使地水保持着液态。

Chelsea Wald: When you add rainwater in there, the sewers have to handle just like a much bigger flow of water and that can overwhelm the sewers.

切尔西·沃德：当你把雨水也算进去，水道系统就必须处理大量水流，这可能会使水道系统不堪重负。