By measuring the motion of the galaxies in a cluster, astronomers can infer the cluster's mass.通过测量星系在一个星系团内的运动,天文学家们可以推定这个星系团的质量。They turned their telescopes towards other nearby galaxies...他们把望远镜转向附近其他星系。Space fli...
Robotics seems to be a sexy subject at the moment.机器人学眼下似乎是时髦的学科.Simon's book provides a succinct outline of artificial intelligence and its application to robotics.西蒙的书简明扼要地概括了人工智能及其在机器人技术方面的应用。Two factors are push...
水发着响亮的汩汩声流下了排水洞.The water went down the plughole with a loud gurgle.一种粗重的声音, 遥远而清晰,打破了这委婉的汩汩声和低语般的喃喃声.A rude noise broke on these fine ripplings and whisperings, so far away and so clear.一阵刺耳的汩汩声从斯内普的喉咙里冒了出来.A terrible r...