by accident怎么读？

Many a bright idea has been hit on by accident.许多好主意都是偶然想到的.He sliced ( into ) his fingers by accident when cutting vegetables.他切菜时不小心切着了手指头.She knocked the vase off by accident.她不小心把花瓶打掉了....

by accident的反义词有：purpose, on, design, by。adv.by accident的反义词（偶然地;意外地）：purpose, on。by accident的反义词（其他释义）：design, by。...

偶然地，误，不经意...