这种背包通常结构比较简单，不设外挂或较少设外挂，除一个主袋外，通常设3 - 5个附袋，便于分类装载物品。
This backpack is usually relatively simple structure, no plug-ins or plug-in for less, with the exception of a main bag, usually a 3-5 attached bag for carrying goods classification.
重建城市及社区结构，让垃圾分类，废弃物品的回收等等变得更容易做到。
When building new municipal community institutions, include garbage classification and waste product classification so that it is easier to recycle.
采用上述结构以后，便于携带并且无菌物品和非无菌物品分类放置。
After the structure is adopted, sterile articles and non-sterile articles are convenient for being carried and sorted.
采用上述结构以后，便于携带并且无菌物品和非无菌物品分类放置。
After the structure is adopted, sterile articles and non-sterile articles are convenient for being carried and sorted.
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