An unknown quantity
未知量, 难预测的事
🧩 词语组成解析
an
[æn]
art. 一（在元音字母前代替不定代词a）;一任一某一;一个;
🗣️ 情景例句
Right.
对。
Button holes are very hard to sew.
要缝钮扣洞非常难。
Of course. Right now we can't produce goods quickly enough for all our customers.
当然可能啦。现在我们还不能很快地为我们所有的顾客生产商品。