preparation preparation單復(fù)數(shù)用法 preparation詞組？酶制劑的制備方法。preparation用法？準(zhǔn)備是與動(dòng)詞prepare對應(yīng)的名詞形式，意思是準(zhǔn)備。作主語、賓語、謂語等。preparati... 2021-03-16 3185次瀏覽
