VOA慢速英语:NASA数学家Katherine Johnson去世,享年101岁

pioneering –adj. to be among the first to do something usually at great risk

legacy –n. something of value that is passed down from someone who has died

segregated –adj. separated because of some difference such as race or religion

calculate –v. to mathematically arrive at the answer to a problem

trajectory –n. the path that a moving object, like a rocket, takes through the air or space that is governed by the principles of physics

inasmuch –conj. introduces a statement that explains something