He gathered up the bills and stuffed them carelessly into his pocket.他收拾好账单, 然后随随便便地塞进了口袋。

The fire is believed to have been started by a carelessly discarded cigarette.据信, 这场火灾是一个随意丢弃的香烟头引起的。

He watched as Boylan carelessly dropped some ice into the glasses.他看着博伊兰漫不经心地往杯子里丢了一些冰块。