official purchase的用法和样例：
例句
- Some friends will possibly say that through the official website such marketing channel purchase, the price will affirm expensively, will be unworthy!
有朋友可能会说，通过官方网站这样的销售渠道购买，价格肯定贵啊，多不值啊！ - While the European Commission sponsors and supports the initiative, the eHealth Procurers Forum is not an official website of the government body.
尽管欧盟赞助并支持该动议，电子医疗购买方论坛却不是政府机构的官方网站。
