VOA慢速英语:'After Twenty Years,' by O.Henry

cop – n. a person whose job is to enforce laws, investigate crimes, and make arrests

watchful – adj. paying careful attention to someone or something

shop – n. a building or room where goods and services are sold

jewel – n. a valuable stone such as a ruby or diamond that has been cut and polished

necktie –n. a long piece of cloth that is worn by men around the neck and under a collar and that is tied in front with a knot at the top

coat – n. an outer piece of clothing that can be long or short and that is worn to keep warm or dry