大气

• Water vapor is a normal constituent of the atmosphere .
  水蒸气是大气的正常组成部分。
• It does n't need much effort .
  这事不需花多大气力。
• A cloud is a condensation of water vapour in the atmosphere .
  云是由大气中的水蒸气凝结成的。
• The earth's atmosphere is an invisible gaseous envelope .
  地球的大气是一个看不见的气体包围圈。
• He was breathing heavily .
  他正喘着大气。
• Did it resemble the earth when this was destitute of an atmosphere ?
  它同地球上还没有大气的时候一样吗？
• Most of atmosphere's water vapor comes from evaporation of sea water .
  大气中的水汽大部分来自海水蒸发。
• For atmospheric environments definitive standards have not been published yet .
  大气环境正式标准尚未发表。
• Astronomers have breached the powerful armor of the earth's atmosphere .
  天文学家摆脱了地球大气的严重束缚。
• Air quality problems may dictate that the power station be sited else where .
  大气质量可能要求电厂另选厂址。