post office box
Longman Dictionary of Contemporary English 5++LDOCE 5++ˈpost office ˌbox noun [countable] TCM formal a PO Box 邮政信箱
Examples from the Corpus
post office box• About two years ago, Afara said, Nancy called up and asked to rent a post office box.• He sells it on advance through a post office box.ˈpost office ˌbox nounChineseSyllable
a Corpus Box PO

