For example, when a user clicks a UI item that represents a city name, some other view might want to display details of the places of interest in that city.
例如，当用户点击代表城市名的ui项时，另一个视图可能需要显示这个城市的景点详情。
2
The weather service about city environment is a new item developed and offered by meteorology departments of our country, a new field of weather service in large and middle cities.
城市环境气象服务是我国气象部门近几年新开发项目，是各大中城市气象服务的新领域。
3
The article express that there is the analysis and appraise of the results that HeiHe city use the control item about tuberculosis by the loan from the world Bank.