老托福听力30篇翻译一

2026/1/27 6:52:52

智课网TOEFL备考资料

老托福听力30篇翻译一

摘要：老托福听力30篇也是重要的托福听力备考资料，今天小编为大家整理的是，人类为了能够在探险月球时，更加易于行走，做了一些改变重量的事情，具体是哪些呢?让我们一起来看看：

Located at the NASA Research Center in Iowa is a 5,000-gallon vat of water, and inside the tank is an underwater treadmill designed by Dava Newman, an aerospace engineer. For four years Newman observed scuba divers as they simulated walking on the Moon and on Mars on her underwater moving belt. She wanted to discover how the gravity of the Moon and of Mars would affect human movement. To do this, Newman attached weights to the divers and then lowered them into the tank and onto the treadmill. These weights were carefully adjusted so that the divers could experience underwater the gravity of the Moon and of Mars as they walked on the treadmill.

Newman concluded that walking on Mars will probably be easier than walking on the Moon. The Moon has less gravity than Mars does, so at lunar gravity, the divers struggled to keep their balance and walked awkwardly. But at Martian gravity, the divers had greater traction and stability and could easily adjust to a pace of 1.5 miles per hour. As Newman gradually increased the speed of the treadmill, the divers took longer, graceful strides until they comfortably settled into an even quicker pace. Newman also noted that at Martian gravity, the divers needed less oxygen. The data Newman collected will help in the future design of Martian space suits. Compared to lunar space suits, Martian space suits will require smaller air tanks; and, to allow for freer movement, the elbow and knee areas of the space suits will also be altered.

NASA的调查中心在IOWA有一个可容5000加仑水的大容器，内部有一个由航空宇宙工程师Dava Newman设计的水下踏车。四年来，Newman一直观察潜水者在她的水下传送带上的模仿在月球和火星上的行走。她想知道月球和火星的重力是如何影响人类的活动的。为了做到这些，Newman给潜水者加了一些重量，然后把他们放入水中，放到脚踏车上。这些重量是谨慎调整过的，因此。潜水者在脚踏车上时可以感受到月球或火星上的重力作用。Newman推断在火星上的行走易于在月球上的行走，月球的重力小于火星，所以在月球重力的作用下，潜水者要努力保持平衡并且走路更笨拙一些。在火星的重力作用下，潜水者有更多的牵引力和稳定性，并且可以轻松达到1.5英里/小时的步速。随着Newman逐渐给脚踏车加速，潜水者步幅更大，动作更优美，直到他们达到一个更快步速。Newman也注意到在火星重力作用下，潜水者需要的氧气更少。Newman收集到的资料将有助于未来火星空间服的设计。与月球服相比，火星服将有更小的空气罐，而且，为了保证更自由的行动，火星服的肘部与膝部的空间也会被改变。...