blocking ui

基本解释

The WorkerPool module runs operations in the background, without blocking the UI.
工作者池模块在后台运行操作，因此不会阻塞用户界面。
Often the user interface does not seem to support making calls asynchronously, since the UI is blocking on a call that may take a while.
通常用户接口不能支持异步调用，因为 UI 阻碍了调用，可能需等候一段时间。
Also, things like worker processes built into HTML5 mean we code background tasks in a more natural way, without having to build ridiculously complex code to prevent blocking the UI.
像同样例如构建入HTML5的worker进程意味着我们可以以一种更加自然的方式来编写后台任务，而不是需要写出一些非常荒谬且复杂的代码展示UI。