VOA慢速英语:研究称月球正在偷走地球的大气

collision – n. a forceful crash involving different objects

vaporize – v. to turn from a solid or liquid into a gas

impact – n. the force or action of one object hitting another

hypothesis – n. an idea or explanation for something that is based on know facts but has not yet been proven

simulation – n. a recreation of a process or situation

stage – n. part of an activity or development