adv. 不谨慎地；无防备地；不留神地；草率地
1.At that time I was a little boy, and I dropped my hatchet unwarily into the river.
那时候我人小，不小心把手上的柴刀掉到河里。
2.At that time I was a little boy, and I dropped my hatchet unwarily into the river.
那时候我人小，不小心把手上的柴刀掉到河里。
3.That time I was a little boy, and I dropped my hatchet unwarily into the river.
那时候我人小，不小心把手上的柴刀掉到河里。