美国在学校重开在带不带口罩问题上有分歧

petition –n. an official document of request

kindergarten –n. a school or class for children usually from four to six years old

visually –adv. of, relating to, or used in vision

worldview –n. the way someone thinks about the world

precaution –n. something that is done to prevent possible harm or trouble from happening in the future

isolation –n. the state of being in a place or situation that is separate from others : the condition of being isolated

hot spot –n. a place of more than usual interest, activity, or popularity