发现了案件的突破口：事主购买的保健品都是通过快递送货上门的，货到付款。

Police found all the health supplements Qiu purchased were delivered by courier.

youdao

发现了案件的突破口：事主购买的保健品都是通过快递送货上门的，货到付款。

Police found all the health supplements Qiu purchased were delivered by courier.

youdao