postage/'pəʊstɪʤ $ 'poʊ-/

n. the money you pay to send a letter, etc. by post

n. [U] 邮费：[postage for sth] How much is the postage for a postcard? 明信片的邮费是多少？

构词post + -age

音组-tage/-tɪʤ/

advantage; cottage; percentage; postage