You would not want to get off one horse and on to an other in the middle of river.
你不会想在河流中从一匹马下来再上另一匹。
One pattern I always use is to get the network calls off the main thread.
我总是用一个模式来获取网络电话关闭主线程。
They'll get up slowly one after the other, sit for a while, then wander off and start to feed.
它们慢慢地一只只起床，坐一会，然后开始漫步和觅食。
They'll get up slowly one after the other, sit for a while, then wander off and start to feed.
它们慢慢地一只只起床，坐一会，然后开始漫步和觅食。
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