Split and join nodes come in pairs.
分离节点和连接节点是成对出现的。
You can join several short lines as well as split long ones.
您可以联接多个较短的行，以及拆分较长的行。
Listing 7 demonstrates the upper, lower, split, and join methods.
清单7演示了upper、lower、split和join方法。
Split a document into many documents or join many documents into one
将一个文档分割成多个文档，或将多个文档组合成一个文档
Split a document into many documents or join many documents into one
将一个文档分割成多个文档，或将多个文档组合成一个文档
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