这项计画主要是为领取年金的老人而设立，但任何居民都可以打电话给伦敦大都会警局，替自己从银行离去的这段路程要求提供私人护卫。
The scheme is mainly intended for pensioners but any residents can telephone the Metropolitan Police to request a personal guard for their journey back from the bank.
使用霍尔集成片，通过计车轮转过的圈数完成机器人行走路程测量；
Using the chip named "Hall IC", to measure the distance by counting the wheels that the robot has run.
使用霍尔集成片，通过计车轮转过的圈数完成机器人行走路程测量；
Using the chip named "Hall IC", to measure the distance by counting the wheels that the robot has run.
应用推荐