VOA慢速英语:日本宇宙飞船返回家园

mission –n. a task or job that must be done

sample –n. a small amount of something that gives information about the object it is taken from

thruster –n. part of a rocket engine that directs force

tangible –adj. something that can be touched and felt

allow –v. to permit, to let happen

precision –adj. the quality of being very exact, very accurate