您既可以以人工方式设计必要的包层次，也可以写一个为您创建这个包的模式。

You can either you manually design the necessary hierarchy of packages, or you can write a pattern that creates it for you.

youdao

没有要求一个特定的排序的数据在OBJ，所以每个造型包写以自己的方式。

There is no requirement for a specific ordering of the data inside the OBJ, so each modelling package writes it in its own way.

youdao