To the whale his tail is the sole means of propulsion.

可是，对于大鲸说来，它的尾巴是发挥进的主要手段。

The submarine's nuclear propulsion system is said to be unaffected.

据说这艘潜艇的核进系统没有受到影响。

The Pacific flying squid uses jet propulsion for another purpose: to launch itself right out of the water.

从水中发射出来。

And hopefully we'll have new kinds of propulsion coming along as well.

希望我们也会有新的进器出现。

Why was she not allowed into the engineers' lectures on orbital mechanics and rocket propulsion?

为什么不让她参加工程师们关于轨道学和火箭进的讲座？

The technological conscience of this effort is the jet propulsion laboratory's chief engineer, Gentry Lee.

技术方面的成就来自喷气进实验室的总工程师真特瑞·李。

Their humbler followers, such as partridges, have a like power of strong propulsion, but soon tire.

次于野鸭和子的鸟，如鹧鸪，有相似的巨大，但很快会疲劳。

In the Summer of 2003, NASA's jet propulsion laboratory, delivered two exploration spacecrafts, to the surface of Mars.

在2003年夏季，NASA的喷气进实验室派出了两台探测飞船，到火星的表面去。

One model being developed at NASA's jet propulsion laboratory is only a couple centimeters on each side.

NASA的噴射進實驗室開發出一種模型每边只有几公分宽。

The thermal protection system, all the propulsion systems that were necessary, really it was an incredible marvel of human engineering.

热防护系统，所有进系统都很有必要，真的是人类工程学上一个奇迹。

The company plans to use ion thrusters, a high-tech propulsion system in which propellant is ejected using an electric field.

公司计划使用例子器，这是一种高科技的系统其剂是一种电场。

Scientists believe that this method of propulsion will reduce the cost of space exploration for universities and even private individuals.

科学家认为这种方式能减少大学甚至个人探索太空的成本。

Electric propulsion systems are so simple that really there's just nothing that you really need to be that concerned about.

电进系统非常简单，没有什么真的需要担心的地方。

The guided missile destroyer USS Benfold was in a scheduled towing exercise in Sagami Bay when the Japanese tug lost propulsion.

导弹驱逐舰本福尔德号按计划在相模湾进行拖救练习，碰巧这艘日本拖船失去了。

We'd have to design new propulsion, navigation, hibernation and life support systems.

我们须设计新的进，导航，冬眠和生命支持系统。

The U.S. side has approved a memorandum on an agreement between the three countries for the exchange of naval nuclear propulsion information.

美方批准了一份关于三国交流海军核进信息的协议备忘录。

Jellyfish use a simple type of jet propulsion to get around: they open their body like an umbrella and then close it.

它们像伞一样张开身体，然后合起来。

Perhaps super magnets could be created to ward off radiation advanced propulsion systems could reduce the time it takes to get to Mars.

或许强磁铁可以解决问题，或进系统的改良可以缩短到火星的航程。

They are working to develop advanced propulsion and habitation—where and how people will live on Mars once they get there.

正努开发先进的助器，以及人类登陆火星后的生活舱。

Chief engineer Gentry Lee is 1,000 miles away at the center of operations at NASA's jet propulsion lab in Pasadena, California. There we go.

总工程师真特瑞·李在1000英里外的控制中心，位于加州帕萨迪纳市的美国宇航局喷气进实验室。好了。