The child whipped through his homework carelessly.
这孩子漫不经心地很快就把作业做完了。
He shrugged off his coat carelessly and let it fall to the floor.
他漫不经心地一扭身子甩掉上衣，让它掉在地上。
I warned him be was courting death, driving carelessly in a tight traffic.
我曾警告过他，在交通拥挤的情况下开车不小心就是在找死。
