早期的天文学家认为我们的星球是宇宙的中心。Early astronomers thought that our planet was the centre of the universe.人类在接近各个星球，探索新的天体。Man was drawing closer to the stars, opening new worlds.“孤独星球旅游中心”的网址是http：//www.lonelyplanet.com。The URL for...
尿液和甲烷气体的变化部分地代偿了营养水平的影响.The variation in urine and methane production compensates partly for the plane of nutrition effect.据医生估计,这种现象是由体内代偿引起的.The doctor estimated that the phenomenon was caused by intracorporal compensa...
他们验明6种植物有可能提炼出药物麻醉剂。They identified six plants as having potential for development into pharmaceutical drugs.任何人都可能会进来在酒中掺麻醉剂。Anyone could have got in and doped the wine.每年有5,000人对麻醉剂产生致命反应。Every year, 5000 people have l...