【英语时差8,16】土星上真的有生命存在？
时间：2019-03-06 作者：英语课 分类：英语时差8，16
Acetylene and hydrogen molecules 1 are disappearing from the atmosphere of Saturn’s moon, Titan. It’s a mystery befitting Sherlock Holmes’ investigative skills, a mystery NASA scientists hope to crack. About fifty percent larger than Earth’s moon, Titan is Saturn’s largest satellite and the only moon with an atmosphere. It has long been known for its methane 2- and ethane-rich atmosphere, and has intrigued 3 scientists when they discovered lakes of liquid methane on its surface. Titan is a frigid 4 place, with temperatures hovering 5 around minus three hundred degrees Fahrenheit 6, but despite the cold, scientists wonder if Titan may harbor life. Life as we know it on Earth is carbon based, and Titan has the same hydrocarbon 7 building blocks for living organisms. But, can life exist at such low temperatures, and if it does, can we detect its presence? Missing molecules may be our first clue. Hydrogen molecules should be produced when ultraviolet light breaks down methane and acetylene molecules in Titan’s atmosphere.
- The structure of molecules can be seen under an electron microscope. 分子的结构可在电子显微镜下观察到。
- Inside the reactor the large molecules are cracked into smaller molecules. 在反应堆里，大分子裂变为小分子。
- The blast was caused by pockets of methane gas that ignited.爆炸是由数袋甲烷气体着火引起的。
- Methane may have extraterrestrial significance.甲烷具有星际意义。
- You've really intrigued me—tell me more! 你说的真有意思—再给我讲一些吧！
- He was intrigued by her story. 他被她的故事迷住了。
- The water was too frigid to allow him to remain submerged for long.水冰冷彻骨，他在下面呆不了太长时间。
- She returned his smile with a frigid glance.对他的微笑她报以冷冷的一瞥。
- The helicopter was hovering about 100 metres above the pad. 直升机在离发射台一百米的上空盘旋。
- I'm hovering between the concert and the play tonight. 我犹豫不决今晚是听音乐会还是看戏。
- He was asked for the boiling point of water in Fahrenheit.他被问到水的沸点是华氏多少度。
- The thermometer reads 80 degrees Fahrenheit.寒暑表指出华氏80度。
- During incomplete combustion some of the hydrocarbon fuel is cracked.在不完全的燃烧中，一些烃燃料裂解。
- The hydrocarbon must be an alkene.这个碳氢化合物必定是烯烃。