C1 adverb /ˌɪn.ədˈvɜːr.tənt.li/
Inadvertently
无意中; 不小心; 错误地
Meaning
without being aware of what you are doing; unintentionally; by mistake
Example
She inadvertently deleted the important file while cleaning her computer.
她在清理计算机时无意中删除了重要文件。