4/29翻譯

The atmospheric layer, stretching 17-48 kilometers(11-13miles) above the earte's surface, is the stratosphere. Its lower portion contains enough ozone(O) gas to filter out most of the sun's harmful ultraviolet radiation.This global sunscreen allows life to exist on land and in the surface layers of bodies of water.
大氣層數，延伸在地球表面之上的17-48公里(11-13英里)，是平流層。 它的更低的部分包含足够的臭氧氣體過濾大多數太陽的有害紫外線輻射。這種全球性遮光劑使生命活存在土地和於水體表層成為可能。
The hydrosphere consists of the earth's water. It is found as liquid water(on the surface and underground), ice(polar ice, icebergs, and ice in frozen soil layers called permafrost), and water vapor in the atmosphere. Most of this water is in the oceans, which cover about 71% of the globe.
水界包括地球的水。 被找到作為液體水(在表面和地下)，冰(極地的冰、冰山和在凍土層的冰叫永凍土)和在大氣的水蒸汽。 大多數的水在海洋，覆蓋大约71%的地球。