采购用英语可以翻译为 "purchasing"。这个词来源于拉丁文 "comprāre"，意思是"买"。一些例句和翻译如下：

I need to go purchasing for groceries today. 我今天需要去买杂货。

We are responsible for the purchasing of office supplies. 我们负责办公用品的采购。

Our company has a large purchasing department. 我们公司有一个大型采购部门。