This book is not too hard and not too easy. It is intermediate.

这本书不太难也不太容易。它是中级的。

youdao

Intermediate electronegativity is great, and the adsorption amount is great as well.

证明分子筛的平均电负性大的，吸附量也大。

youdao

Intermediate electronegativity is great, and the adsorption amount is great as well.

证明分子筛的平均电负性大的，吸附量也大。

youdao