late 14c., "non-essentially," also "unnaturally," from accidental + -ly (2). Meaning "unintentionally" is recorded from 1580s; phrase accidentally on purpose is recorded from 1862.
实用例句
1. A special locking system means the door cannot be opened accidentally.
特殊的锁定系统使门不会被意外打开。
来自柯林斯例句
2. Flavell had accidentally discharged a pistol, firing it into the ceiling.
弗拉维尔不小心扳动了一把手枪的扳机，子弹射入了天花板。
来自柯林斯例句
3. She accidentally knocked the tea tin off the shelf.
她不小心把架子上的茶叶罐碰了下来。
来自柯林斯例句
4. It appears the names were accidentally erased from computer disks.
看起来那些名字被意外地从计算机磁盘上删除了。
来自柯林斯例句
5. A policeman accidentally killed his two best friends with a single bullet.
