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- second stage booster rocket 第二节火箭
- Perched on the shoulers of the booster is the second stage, the most powerful hydrogen-fueled rocket ever built. 放在助飞火箭上的是第二节，那是迄今制造的最强大氢燃料火箭。
- Perched on the shoulders of the booster is the second stage, the most powerful hydrogen-fueled rocket ever built. 放在助飞火箭上的是第二节,那是迄今制造的最强大氢燃料火箭。
- third stage booster rocket 第三节火箭
- first stage booster rocket 第一节火箭
- As the first rocket burns out,the second stage motor ignites. 火箭第一节燃料用完的时候，第二节就点燃了。
- The rocket rises and we can see the second stage ignite. 火箭升高了，我们可以看到二级点火。
- As the first rocket burns out, the second stage motor ignites. 火箭第一节燃料用完的时候，第二节就点燃了。
- Minutes after liftoff, mission control announced that the first stage booster had successfully separated from the rocket and that the flight was proceeding as planned. 起飞后数分钟，任务控制中心宣布第一级助推器和火箭成功脱离，飞行在按计划进行。
- This is the second stage of cognition. 这是认识的第二个阶段。
- The second stage is the metaphysical stage. 第二阶段是形而上学阶段。
- The second stage of labor usually lasts 4 hours. 第二产程通常持续4小时。
- The second stage will be the period on ILR. 在达到以上两个步骤之后，申请者则有资格申请入籍英国。
- Shortly after it lifted off in September 1992, its booster rocket fired to break out of Earth orbit, and the fragility of spaceflight intruded. 观察者号于1992年9月升空没多久，推进火箭开动要使它脱离地球轨道时，便暴露出此趟飞航的脆弱性。
- The EKV will immediately bank sharply to either the right or the left to avoid being hit from behind by the booster rocket. EKV会立刻向左边或者右边机动，以防止被后面的助推火箭撞击。
- U.S. missile defense system engages and destroys the booster rocket, but the warhead explodes 150 kilometers above the earth. 美国飞弹防御系统出动，击毁了推进火箭，但弹头仍在地球上空150公里处引爆。
- The second stage may be termed one of strategic stalemate. （三七）第二阶段，可以名之曰战略的相持阶段。
- The EKV willimmediately bank sharply to either the right or the left to avoid being hitfrom behind by the booster rocket. 大气层外拦截器(EKV)会立刻向左边或者右边倾斜，以防止被后面的助推火箭撞击到。
- We saw the booster rockets disengage and fall into the sea. 我们看到火箭助推器脱落后坠入大海。
- This was the second stage in the Party's development. 这就是党的发展过程的第二个阶段。
