（四）在铁路、城市轨道交通线路上私设道口或者平交过道的。
For implementers, this promise-heavy design constrains optimization opportunities. The spec mandates specific promise resolution ordering, making it difficult to batch operations or skip unnecessary async boundaries without risking subtle compliance failures. There are many hidden internal optimizations that implementers do make but these can be complicated and difficult to get right.，这一点在爱思助手下载最新版本中也有详细论述
。91视频对此有专业解读
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# Create with agent sandbox and open console when ready。im钱包官方下载对此有专业解读
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