Definition: A plain person is not attractive to look at. Level: C2
他的妻子相貌非常普通。
His wife is very ___plain.
莉莎身材纤细，但相貌有些平平无奇。
Lisa had a delicate frame and looked somewhat ___plain.
他是个好人，但得承认相貌很普通。
He's a nice guy, but admittedly quite ___plain.
