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

我们须设计新的，导航，冬眠和生命支持系统。

A firecracker is a rocket because it has a propulsion system.

爆竹是火箭，因为它有一个系统。

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

据说这艘潜艇的核系统没有受到影响。

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

希望我们也会有新的器出现。

The first electric propulsion engines were actually developed in the 50s and 60s.

最初的电力引擎，是在上世纪五六十年代发展起来的。

We currently have nuclear propulsion systems.

我们目前拥有核系统。

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

技术方面的成就来实验室的总工程师真特瑞·李。

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力学和火箭的讲座？

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。

SCOTT MORRISON, PRIME MINISTER OF AUSTRALIA: To stress again, this is about propulsion.

再次强调，这些武器都是动力驱动发面的。

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

正努力开发先的助器，以及人类登陆火星后的生活舱。

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

次于野鸭和鸽子的鸟，如鹧鸪，有相似的巨大动力，但很快会疲劳。

Hubble has revolutionized knowledge of the universe with thousands of spectacular images but has no built-in propulsion.

哈勃望远镜拍摄了数千张壮观的图像，彻底改变了人们对宇宙的认识，但它没有内置装置。

A rocket is simply a structural body that you can launch, it has a propulsion system.

火箭只是一个可以发射的结构体，它有一个系统。

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。

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的实验室派出了两台探测飞船，到火星的表面去。

The trial involved more than 60 tests concerning the vessel's propulsion and operating systems as well as passenger comfort.

试验涉及 60 多项测试，涉及船只的和操作系统以及乘客舒适度。

The rocket continued to soar, even though there was no propulsion.

8. 尽管没有力，火箭仍继续翱翔。

To move the Earth more efficiently, we'd have to consider electric propulsion.

为了更有效地移动地球，我们必须考虑电力。

They were testing their propulsion system in what they called a propulsion open-air test.

他们正在他们所谓的露天测试中测试他们的系统。