accidentally
adv. 意外地，偶然地； 意外失误地
例句
He accidentally sawed through a cable.
他不小心锯断了电缆。
《牛津词典》
He accidentally sliced through his finger.
他不小心把指头割破了。
His hand accidentally brushed against hers.
他的手无意之中碰了一下她的手。
