adv.无缘无故地
She was unaccountably irritated. 她莫名地生气。
He has been unaccountably delayed. 他被莫名其妙地耽误了。
Quite unaccountably she burst out crying. 她莫名其妙地哭了起来。
In the book,a tycoon unaccountably becomes the hero's friend. 在这本书中，一个大亨莫名其妙地成为了那位英雄的朋友。
Younger Americans are unaccountably demanding a right to life after work. 但如今这种思想却遇到了后继乏人的难题。
