Tetrapolarity
四極性
??? 情景例句
We'll sign two originals, each in the Chinese and English language.
我們將要用中文和英文分別簽署兩份原件。
Next week I must start my term paper for Poli Sci.
到下周，我必須著手寫(xiě)政治學(xué)的期末論文了。
The pictures are on the wall.
畫(huà)掛在墻上。