Difunctional
a. [化]双官能的
🗣️ 情景例句
Oh, I forgot.
噢， 我忘了。
A friend is never known till a man have need.
不到患难时，永远不能认识真正的朋友。
The wall behind looks a bit grey and dull. What can we do to make it look less ugly?
后面那堵墙看起来有点暗。我们能不能让它漂亮点？