慢速英语:美国改变了在南部边境寻求庇护移民的政策

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trafficked –adj. the illegal business of taking people from one place to another to be used as workers

generous –adj. freely giving and sharing things that are of value

overwhelmed –adj. to cause a person or group to have too many things to deal with

exploit –v. to use often in a way that is unfair to others