It may be categorized into importcollection and export collection, where the latter can be further divided into export documentary collection and export clean collection.
根据方向不同分为进口代收业务与出口托收业务，出口托收又分为出口跟单托收与出口光票托收。
2
To search image by content, you must first import an image, or draw a sketch, that you can use to query and present images from a collection.
要按内容进行搜索，必须首先导入一个图像或绘制一个草图，然后用它来从一个集合中查询或呈现图像。
3
In this case, we import a service for getting contacts, wire in the list, and set the current contact. The drop down binds to the contacts collection.