Mkdir -p creates the named directory, including any intermediate directories that need to be created; and CD changes to the new directory.
mkdir - p创建指定目录，包括任何需要创建的中间目录；cd命令则切换到新目录。
Obstruction and fistulization of alimentry tract were more common in CD (P<0. 05).
肠梗阻及瘘管形成在CD患者更常见（P< 0．05）。
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