词根词缀：peti-, pet-, -pit-

【来源及含义】Latin: to aim at, aim for, go toward; to seek, seek out, ask, request; strive after

【同源单词】Ad perpetuam rei memoriam, appetence, appetency, appetent, appetently, appetite

词根词缀：stochast-

【来源及含义】Greek: to aim at, to guess, to conjecture; to aim, to target, to mark

【同源单词】astochastic, stochastic, stochastic analysis, stochastic automaton, stochastic control theory, stochastic cooling