if (left < n) {
刘年丰：有挺多的，比如移动分拣，这是一种更精细的搬箱子。需要把箱子里面的某些特定的东西，拿到特定的位置去。这一大类任务，无论是横向（跨客户）还是纵向（跨场景）看，都有极强的泛化空间。
，更多细节参见heLLoword翻译官方下载
I wonder how the government of California plans to enforce it?
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Can be created from many different programming languages.