The auction house emailed every registered philatelist about next month's rare stamp sale.

拍賣公司寄電子郵件給每位登記在案的集郵者，通知下個月的稀有郵票拍賣會。

Our new client, a retired philatelist, asked the bank to insure his stamp collection.

我們的新客戶是一位退休的集郵者，他請銀行為他的郵票收藏投保。

The hotel concierge recommended a postal museum to the visiting philatelist from Osaka.

飯店禮賓人員向那位來自大阪的集郵者推薦了一間郵政博物館。