adv.不能说明地,不可解释地;无责任地;
例句:
The train stopped unaccountably ; shortly afterward a ticket inspector began ; the inspector's face was vaguely familiar.
列车无故停驶,不一会儿又开始查起票来,查票人的脸有些眼熟.
Leonard felt unaccountably happy.
伦纳德感到说不出的高兴。
She was unaccountably irritated.
她莫名地生气.