astronaut是什么意思

It also slows down more as you move faster, which means astronauts (宇航员) someday may survive so long in space that they would return to an Earth of the distant future.

出自-2011年6月听力原文

Although, over the years, Barbies had more than 180 different careers, including football coach, sign language teacher, ambassador, president and astronaut, her body shape hasn't changed much.

2017年12月六级真题（第一套）听力 Section B

Bacteria are an annoying problem for astronauts.

2019年高考英语全国卷2 阅读理解 阅读D 原文

For instance, astronauts lose bone mass.

2015年高考英语湖北卷 阅读理解 阅读D 原文

If you leave your arms out, they float free in zero gravity, often giving a sleeping astronaut the look of a funny ballet dancer.

2015年高考英语湖北卷 阅读理解 阅读D 原文

Nasa is worried about two things: recovery time once astronauts return home, and, more importantly, how to maintain strength and fitness for the two and a half years or more that it would take to make a round-trip to mars.

2015年高考英语湖北卷 阅读理解 阅读D 原文

One of the nasa's major concerns about astronauts is how they can remain healthy for long in space.

2015年高考英语湖北卷 阅读理解 阅读D 题设

Some astronauts feel sick on the station during the first few days because their brains receive contradictory messages.

2015年高考英语湖北卷 阅读理解 阅读D 题设

The astronauts will suffer from a carbon-dioxide headache when they exercise in one place for a long time.

2015年高考英语湖北卷 阅读理解 阅读D 题设

The exercise bike for the American astronauts has no handlebars.

2015年高考英语湖北卷 阅读理解 阅读D 原文

The microorganisms from our bodies grow uncontrollably on surfaces of the international space station, so astronauts spend hours cleaning them up each week.

2019年高考英语全国卷2 阅读理解 阅读D 原文

They come to camp, wanting to know what it is like to be an astronaut or a pilot, and they leave with real-world applications for what they're studying in the classroom.

2018年高考英语北京卷 阅读理解 阅读B 原文

You can end up with what astronauts call a carbon-dioxide headache.

2015年高考英语湖北卷 阅读理解 阅读D 原文