// recursively merge each key's register with the incoming state for that key
，这一点在下载安装汽水音乐中也有详细论述
When I brought it up, the vibe in the discussion-circle was "yeah, that is kinda weird, I don't know what happened there", and then the conversation moved on.
妈妈向我解释，她知道外公的教育观念落后，因此再三叮嘱他们只需管好我的吃住，不必在其他方面插手。于是一到周末，外公外婆给我做饭、洗校服。我们之间的话题始终围绕吃住。他们面对我总是一副小心翼翼的样子。我赞同她当年的明智，却也慢慢意识到，照料可以留下恩情，却未必能生出真正的亲近。