n. a person authorized to serve in a position of authority on a vessel
v. direct or command as an officer
n. 军官, 主管, 官员, 公务员
vt. 指挥
1. The police officer helped us find our lost dog.
警察帮我们找到了丢失的狗。
2. She wants to become a school officer after graduation.
她毕业后想成为一名学校工作人员。
3. The officer gave a speech about safety in the community.
这位工作人员发表了关于社区安全的演讲。