exchange of needed goods
英
美
- exchange v.交换；兑换n.交换；交易所；兑换；交战
- goods n.货物；商品；动产n.罪证
- needed adj.需要的动词need的过去式和过去分词形式.
- of prep.关于；...的（表所属）；出身于；由于
- This arrangement helps implement the principle of equality and mutual benefit and exchange of needed goods.
这样做有助于实现平等互利，互通有无的原则。
