1.A woman ended up in hospital after eating a large amount of the spicy condiment wasabi by mistake.
by mistake 错误的
He has been arrested by mistake.
警方误抓了他 。
2.It is usually brought on by life-altering and shocking events such as financial troubles, serious traffic accidents or bad news.
life-altering改变人生的
It would be a life-altering experience for her and for you.
如果你离开,对她和你都是改变命运的经历 。