There is no such thing as a quality problem. There are only problems of people not doing what they are supposed to do.
不存在所谓的质量问题。只有人们没有做他们应该做的事情的问题。
我父亲总是教导我:关心和分享。这就是我们举办公开课的原因。我唯一能做的就是尝试回馈。