If a spacecraft travels faster than 11 km a second, it escapes the Earth's gravitational pull.(如果一架宇宙飞船飞行超过每秒11公里，它就能摆脱地球引力。)
Johann Franz Encke, Director of the Berlin Observatory, finally determined a value for the AU based on all these parallax measurements: 153,340,000 km.(柏林天文台主任约翰·弗朗茨·恩克最终根据所有这些视差测量结果确定了天文单位的一个值为153,340,000公里。)
Each tower serves an area of approximately 3 sq km.(每个基站的服务范围大概是3平方公里。)
According to a report, Google's self-driving cars clocked 1,023,330 km, and required human intervention 124 times.(据报道，谷歌的自动驾驶汽车行驶了1023330公里，有124次需要人工干预。)
You start by running 5 km, move up to a 10 km, then a half marathon.(你先跑5公里，再跑10公里，然后跑半程马拉松。)
Every Saturday morning, at 9 am, more than 50,000 runners set off to run 5 km around their local park.(每周六早上9点，5万多名跑步者出发，绕着他们当地的公园跑5公里。)
The country has only 23 Km of coastline.(国家只拥有23公里的海岸线。)
The various parts of The Falkirk Wheel were all constructed and assembled, like one giant toy building set, at Butterley Engineering's Steelworks in Derbyshire, some 400 km from Falkirk.(福尔柯克摩天轮的各个部件都是在距离福尔柯克约400公里的德比郡巴特利工程公司的钢铁厂建造和组装的，就像一个巨大的玩具建筑。)
Why 36 km?(为什么是36千米？)
That is one intervention about every 8,047 km of autonomous driving.(这相当于每行驶8047公里的自动驾驶里程，（驾驶员）要手动干涉一次。)
