常見例句用作形容詞 (adj.)There was very little evidence of economic gloom here at the 20th annual Supercomputing conference.在今年舉行的第二十屆年會(huì)上,基本上看不出什么經(jīng)濟(jì)低迷的跡象。By the 20th day after mating, almost all the treated ewes had lost their embryos, but none of the controls had.到第二十天時(shí),幾乎所有經(jīng)過處理的羊都失掉了它們的胚胎,而那些有嗎啡寡聚核苷酸抑制的母羊則沒有。 返回 20th