health will enable more ambitious future missions. it can also help those of us who are staying on earth. the canadian space agency is using its expertise to improve health care for people living in remote regions. the technology that s...
The police came in time and solved the problem.刚才发生了一起车祸,警察及时赶到,解决了问题。 (2) from time to time =at times有时,时常 I miss my parents from time to time.我时常想念我的父母。 (3) at a time一次 The boy can eat eight eggs at a time.这孩子一次能吃八个鸡蛋。 (4)...
Space travel used to be a young man’s game,but when John Glenn went into space aboard Discovery, four generations of men and women could gaze into the sky and think “That could be me someday.”At the same time Glenn was looking down and doing some thinking of his own. “It’s qu...
People aboard the Aurora Station(曙光女神空间站),the world's first luxury(豪华的)space travel hotel,can tell you in the future.(1)___. US company Orion Span built the hotel.It will fly 320 kilometers above Earth.(2)___.Two of them will be workers.Maybe they used to be NASA(美国...
IS EXPLORING SPACE A WASTE OF TIME AND MONEY?探索太空是浪费时间和金钱吗?Countres around the globe are spending bilions of dolars and los oftime世界各国正在投入数十亿美元和大量时间on various space missions, whether to Mars or other planets much further执行各种太空任务无论是去火星还是其他更远的...
答案 答案见上相关推荐 11.太空旅行成为可能已经有一段时间了,有些人认为太空旅游业可以在未来发展。Space travel has been possible for some time,and some people think space tourism could be developed in the future.反馈 收藏
Early humans also noticed changes of the moon.6used thechangingfaces of the moon to tell time. The moon was“full”when its face was bright and round. The early humans counted how many times the sun appeared7full moons. They learned that thisnumberalwaysremained the same—about twenty-nine...
‘Thereusedto be ashrine of the Muses here,’he said,‘near the outlet of the stream...Simonidesspeaks of the place...’(De Pyth. or.402C)⁵Admittedly,howthe place helps is not clear,asthe text is defective:itisprobablysomething about how the place usedto inspire, not justbecause of...
"So, where[as] I used to be just 6 minutes older, now I am 6 minutes and 5 milliseconds older," Mark Kelly said in a panel discussion on July 12, 2020,Space.com previously reported. "Now I've got that over his head." General relativity and GPS time travel ...
Now historically, rockets have been used once. 从历史上看,火箭曾被使用过一次。 17 00:01:12,40 --> 00:01:13,34 And then that's it. 然后就是这样。 18 00:01:13,35 --> 00:01:19,92 But if you think about it, would you ever build an airplane, fly it once and then throw it...