相关单词近义词 preterit 过去的临近词Prerad, PRE, prehospital emergency medical service, pre-tax profits/losses/income, pre-payment electronic energy meter, pre-examination and pre-diagnosis, pregrammed temperature chromatography, Pre-Designated Height Tactical Area, prefilled type mammary prosthesis bag, prevulcanization natural rubber latex, pre-support through hammering wedge, premonitory symptoms of an earthquake 返回 preterite