您要查找的是不是：
- The MESSENGER spacecraft is zeroing in on Venus for the most significant gravity assist maneuver of its long journey to Mercury. 为此次“信使”号在前往水星的长途旅程中最重要的引力机动，飞船正在对金星进行校正。
- Planetary gravity assist changing orbit 行星引力辅助变轨
- Design of Earth Gravity Assist Trajectories for the Coronal Mass Ejections Probe 基于地球引力变轨的日冕探测器轨道设计
- He assist me with my income tax return. 他帮助我填写所得税申报单。
- Gravity assisted orbital transfer 引力辅助变轨
- Jack used to assist Mary in her lessons. 杰克过去常常帮助玛丽学习功课。
- 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。
- Jupiter, with august gravity, sitting in the midst. 朱庇特威风凛凛地坐在当中。
- The stone rolled down the hill by gravity. 石头在重力作用下向山下滚去。
- 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。
- She does not know the gravity of her illness. 她不知道自己病情严重。
- He asked us to assist him in carrying through his plan. 他请求我们帮他完成他的计划。
- The force of gravity pulls things towards the earth's centre. 地心吸力把物体吸向地心。
- Trajectories to the far side of the sun via gravity assists 太阳高纬探测器的借力飞行轨道设计
- We asked him to assist us in designing a new bridge. 我们请他帮助我们设计一座新桥。
- His duty is to assist the aggrieved person inasmuch as he is able. 他的责任是尽其所能帮助受害人。
- She refused to assist at the reception for reasons unknown. 不知什么缘故她不肯出席招待会。
- He doesn't seem to understand the gravity of the situation. 他似乎没有意识到形势的严重性。
