单词	PI structure
释义	PI structure 比例积分结构
随便看	A worm or snake crawls a worm will turn A wormwood a worn-out age A worn-out horse for hire A worn-out horse for hire; a jade aworry a worrying development/trend/sign a worshipful biography A worshipful or idealizing biography A worsted fabric with a distinct diagonal rib a worsted suit aworth a worthless character A worthless fellow a worthless fool a worthless individual A worthless record or document A worthless son is a disgrace to his parents a worthwhile cause/discussion/job a worthwhile job aworthy A Worthy but Knotty Question a worthy cause A worthy deed