coroutines如其名，是kotlin提供一种轻量级的协程API，也可以理解为kotlin提供的异步操作API。 学习主要是阅读官方提供文档，圈下自己感觉的重点。 The main difference between [runBlocking]and [coroutineScope]is that the latter does not block the current thread while waiting for all children to complete. runblocking和