h->length = length;
Under the hood, BPattern builds a pattern AST using the same pattern node classes as the rewrite engine. All the original matching and rewriting machinery is still there — just wrapped in a more approachable, scriptable interface.
，更多细节参见heLLoword翻译官方下载
小苏父母属马，今年是他们的本命年。两口子同岁，刚结婚时穷，只有几间泥墙小平房，低得可触头。做灯笼之后，在房旧址上盖了三层楼，一楼做灯笼，二楼住人，三楼当仓库。
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