单词	trajectory
释义	trajectorytrajectory /trəˈdʒɛktəri/ noun (plural trajectories) [countable] Etymology ETYMOLOGYtrajectory Origin: 1600-1700 Modern Latin trajectoria, from Latin trajectus, past participle of traicere to cause to cross, from trans- ( ➔ TRANS-) + jacere to throw science, physics the curved path of an object that is fired or thrown through the air
随便看	undressed undue undulate undulating undulation unduly undying unearned unearth unearthliness unearthly unease uneasily uneasiness uneasy uneducated unelected unemotional unemployed unemployment unemployment benefits unemployment line unencumbered unending unenviable

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