Vocabulary consisting only from characters you are able to read
数式
すうしき
numerical formulamix
水準
すいじゅん
(1)level, standard, (2)water level mix
冗談
じょうだん
jest, joke, funny storyjlpt3
測る
はかる
(1)to measure, to weigh, to survey, to time (sound, gauge, estimate), (2)to conjecture, to infer, to surmise godan, verb, vtrans