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汉语拼音：shuǐ quān

地球外部圈层之一。由以液态或固态形式存在的各种地球表层水体组成。包括地面水、地下水和大气中的水分。以地面水为主，主要指海洋、河流、湖泊、冰川等。全球水的总储量中，淡水仅占253%，其余均为咸水。水圈处于连续的运动状态，通过水文循环，各种水体的水互相交换，不断更新。

• These dissolved materials thus pass from the lithosphere to the hydrosphere.

  因此,这些溶解了的物质就从岩石圈转移到水圈.

• The hydrosphere and the lithosphere together form the Earth's surface.

  水圈与岩石圈一起形成地球的表面.

• All the water of the earth's surface is included in the hydrosphere.

  地球表面的水都属于水圈的范畴.

• The materials in the atmosphere and hydrosphere are added to those of the 10 - mile zone.

  把大气圈和水圈中的物质加进这10英里岩带的物质中.

• By far the greater part of the hydrosphere, of course, is the ocean basins.

  海域无疑是水圈中的最大部分.

• In practice, fire cylce often water cycle.

  实践中,水圈 、 火圈往往相伴而生.

• Screw 4 2 X 8 set screws ( with 4 rubber rings ) tight, and it is ready to use.

  将4个2X8固定螺丝 ( 含4个橡胶防水圈 ) 转紧即可使用.