accidentally meaning in English
adv.
偶然，意外，附带。 to meet accidentally 偶然碰到。
Examples
- He got his wrist broken accidentally .
他扭伤了手腕。 - He broke his wrist accidentally .
他扭伤了手腕。 - The danger of accidentally overheating the infant thus is present .
婴儿有出现过热的危险。 - They accidentally knocked heads when they stood up .
他们站起来的时候，两人的头无意撞了一下。 - I accidentally learned to write round hand instead of ladies-hand .
我不知不觉地学成了写圆体字，不会写女人格式的字体。