franking machine
noun /ˈfræŋkɪŋ məʃiːn/
/ˈfræŋkɪŋ məʃiːn/
(especially British English) (North American English usually postage meter)
- a machine that prints an official mark on a letter to show that the cost of posting it has been paid, or does not need to be paid
邮资机（加盖邮资已付印记）