1580s, "sending of mail by post;" 1650s as "cost of sending something by mail," from post (n.3) + -age. Postage stamp is attested from 1840; they were recorded as being collected in albums by 1862.
权威例句
1. Send a cheque for £18.99 plus £2 for postage and packing.
请寄上18.99英镑的支票,外加2英镑的邮资和包装费。
2. Proof of postage will not be accepted as proof of receipt.
邮资单据不能当作收据。
3. For foreign orders postage is extra.
国外订单邮费另计。
4. an increase in postage rates
邮费的增加
5. All letters must be stamped with the correct postage.