叛军已经逼近到距首都150公里的地方。The rebels have advanced to within 150 kms of the capital.我一直以每小时150公里的速度行进。I had been travelling at 150 kilometres an hour.光以每秒约30万公里的速度传播。Light travels at around 300,000,000 metres per second....

“公里的”的英语可以翻译为：kilometric ...