1.The candidate made a thoughtless remark and the opposition party did not fail to make capital of it in the campaign.
这位候选人作了一次轻率的讲话，于是反对党在竞选活动中就趁机用来钻空子。
2.Thoughtless boys have defaced the desks by marking on them.
轻率的男孩们乱画毁损了桌子。
3.He was as thoughtless as he was unkind.
他做事不加思考，就像他的残暴一样典型。
4.As for any form of unstructured time, like seeing movies, strolling around, or even just being in a thoughtless daze, only when the devil is blind to work, time, efficiency and productivity will that time come for me.
至于什么休闲活动，譬如看电影、逛街，甚至只是干坐着发发呆，绝对是没门儿的，除非驱使我工作的“魔鬼”已经完全瞎掉，看不到工作、时间、效率或业绩！
5.A thoughtless whim seized Thornton, and he drew the attention of Hans and Pete to the experiment he had in mind.
约翰·桑德靠边坐着，巴克坐在他一侧，桑德脑子里闪过一个轻率的怪念头，于是他引来哈斯和彼得的注意，来看他想到的这个试验。
6.How could I be so thoughtless?
我怎么会那么粗心大意呢？
7.One who expresses or promotes thoughtless praise; an adulator.
奉承者表示赞扬或不加思索地夸大别人的人；谄媚的人
8.This is because there are many careless and thoughtless people.
这是因为有许多粗心大意之人。
9.With her sister she was much alone, a lone figure in a tossing, thoughtless sea.
和她姐姐在一起，她感到自己就像无情的汹涌大海里的一叶孤舟，孤苦无依。
10.It was very thoughtless of you to do so.
你这麽做真是非常轻率。
