police officer
🇺🇸
/pəˈliːs ɑːfɪsər/
🇬🇧
/pəˈliːs ɒfɪsə(r)/
a person who works for the police to keep people safe and enforce laws
The police officer helped the lost child find their parents.
警察幫助迷路的孩子找到了他們的父母。