VOA慢速英语:当今美国青少年就校园枪击案司空见惯

campus - n. the area and buildings around the school

cumulative - adj. increasing or becoming better or worse over time

inspire - v. to make or cause someone to do something

groundswell - n. a fast increase in public support of something

momentum - n. the strength or force that allows something to continue or to grow stronger or faster as time passes

exhausted - adj. completely worn out or tired

weariness - n. reluctance to see or experience more of something

engaged - adj. busy with activity

diversify - v. to change (something) so that it has more different kinds of people or things

encouragement - n. something that makes someone more likely to do something

access - n. a way of getting near, at, or to something or someone