single threadˈsiŋɡlθred短语⁴⁰³⁹¹ 基本例句 adj.单头螺丝的 Specifically, if everything is happening in a single thread, performing long operations such as network access or database queries on the UI thread will block the whole user interface. 特别是，如果把所有的事件都放在主线程中来处理，需要长时间来处理的事件比如网络访问或者数据库查询，会阻塞整个 UI。 cnblogs