earth tophr.earthn.地球；泥土；世间earth dynamic ellipticity地球力学椭率Earth s free oscillations地球自由振荡earth relative reflection地表相对反射率earthing capacity current接地电容电流earth-reflected impulse大地反射脉冲earth horizon sensor head地平传感器头earthed-emitter circuit发射极接地电路earth pressure of chamber土舱土压力earth surface temperature地面温度earth-ionosphere cavity地球－电离层空腔

1. Any EarthWatch setup may be saved in a configuration file and later restored by opening the file.
   任何地球安装程序可能会被保存在配置文件中，后来恢复开放的档案。
2. The Earthwatch Institute, an environmental organization, runs hands-on programs, teaming tourists with research scientists studying animals and the environment.
   环保机构地球观察研究院经营可以亲自参与的项目，他们将观光客和研究动物和环境的科学家组成一队。