VOA慢速英语:美国墨西哥边境部署国民警卫队

reserve –adj. a military force in addition to the regular force

governor –n. a person who is the leader of the government of a state, province, etc.

proclamation –n.(presidential) a statement by the president on an issue of policy

mission –n. a job or task given to a person or group

cartel –n. a group that agrees to fix prices and control trade in a product or industry

mechanism –n. a process or system used to get a certain result