VOA慢速英语:Congressional Hearing Examines Free Speech at US Colleges

uncomfortable - adj. causing discomfort

confront - v. to oppose or challenge someone in a direct and forceful way

controversial - adj. relating to or causing much discussion, disagreement, or argument

institution - n. an established organization

commitment - n. a dedication to something

abridge – v. to lessen the strength or effect of something, such as a right

mask – n. a covering used to hide or disguise your face

noose – n. a large loop at the end of a rope that gets smaller when you pull the rope and that has been used to hang people