1·It was careless of me to leave the door open.
怪我粗心忘了关门。
—— 《牛津词典》
2·I'm sorry. How careless of me.
对不起，我太粗心了。
—— 《柯林斯英汉双解大词典》
3·He seemed careless of his own safety.
他仿佛已把自己的安危置之度外。
—— 《牛津词典》
4·He had shown himself careless of personal safety where the life of his colleagues might be at risk.
他在同事们有生命危险时表现出不顾个人安危之举。
—— 《柯林斯英汉双解大词典》
5·It was careless of my little brother to leave the door open when he went to the cinema last night.
昨晚我弟弟去看电影的时候没关门，他太粗心了。
6·Oh, dear! It was careless of you to do so.
哎呀！你这样做真是太不小心了。
7·"It is very careless of mother," said that young scoundrel John, "not to be here when we come back."
“妈妈太粗心了，”那个小坏蛋约翰说，“我们回来的时候她不在这儿。”
8·I'm terribly sorry to tell you that it's careless of me to lose the book you were so kind to lend me last week.
非常抱歉地告诉你，我太粗心了，丢了你上周好心借给我的那本书。
9·Don't be careless of your own safety!
对个人安全可别马大哈！
—— 《新英汉大辞典》
10·He is careless of his reputation.
他不顾自己的名声。