例句與造句

1. Chelating and detoxification metal ions are also the focus of many researchers . according to lewis soft - hard acid - base theory , aluminum is the hardest trivancy lewis acid , and polyphenols are lewis base theoretically , they can combine together tightly
   根據(jù)lewis軟硬酸堿理論，鋁是三價(jià)金屬離子中最硬的lewis酸，而多酚類卻是lewis堿（電子對供體，親核體） ，兩者可以很好的結(jié)合。
2. It's difficult to find hard acid in a sentence. 用hard acid造句挺難的