您要查找的是不是：
- Gravity driven system is the main kind of passive driven system,which is safe,economical and reliable with prodigious development potential. 重力驱动系统是非能动系统的主要类型，具有安全、经济、可靠性高等多项优点，发展潜力很大。
- In Ethiopia, for instance, WaterAid is supporting several spring-fed gravity driven projects in the South of this very dry nation, while in the North, several hand-dug wells are underway. 举例说，在埃塞俄比亚，“水援助组织”支持几个引水灌溉项目在这个极度干旱国家的南方；同时在北方，几个手挖井也在进行中。
- In view of reservoir properties and development characteristics in Oubei block of Jiangsu Oilfield,a numerical simulation model of gravity drive of crestal nitrogen injection was established. 针对江苏油田欧北区块的地质条件和开发现状,建立了顶部注氮气重力驱数值模型。
- Caldwell and Marc Kamionkowski;Scientific American, January 2001].If quantum-gravitational repulsive gravity drove cosmic inflation, these observations might find some hint of it. 如果驱动宇宙暴胀的是量子重力的排斥型重力，或许能在宇宙微波背景的观测里找到一些线索。
- We are fully aware of the gravity of the situation. 我们十分清楚形势的严峻性。
- Moon's weak gravity let the gasses slip away into space. 月球的微弱引力允许气体逃到太空里去。
- I've never seen a car being driven so recklessly. 我从没见过有人开车这么卤莽。
- Jupiter, with august gravity, sitting in the midst. 朱庇特威风凛凛地坐在当中。
- How can I drive away these feelings of sadness? 我该怎样做才能驱散忧伤？
- The stone rolled down the hill by gravity. 石头在重力作用下向山下滚去。
- Bill wave his hand to us and then drive away. 比尔向我们挥手告别后开车走了。
- What is the force of gravity at sea level? 海平面的地球引力多大?
- He could hardly keep his gravity. 他忍不住要笑出来。
- The engines are driven by steam. 这些发动机是由蒸汽驱动的。
- She does not know the gravity of her illness. 她不知道自己病情严重。
- The machines are driven by electric motors. 这些机器都是由电动机驱动的。
- He was driven crazy by the extremity of pain. 极度的痛苦使他发狂。
- He was almost driven out of his mind with anxiety. 他焦急得差不多精神都错乱了。
- How long does it take him to drive to work? 他开车去上班要用多长时间？
- Sing a song to drive off those feelings of sadness. 唱首歌，驱散那些悲伤之情。
