Definition: without being intended Level: B1
我不小心删除了文件。
I deleted the file ___by ___accident.
我在跳舞时，有人不小心踢到了我，我的眼镜掉了下来。
I was dancing and someone kicked me ___by ___accident, and my glasses fell off.
她不小心把牛奶洒了。
She spilled the milk ___by ___accident.
