1·He is always careless about his schoolwork, so he keeps making the same mistakes.
他在功课上总是粗心大意，所以他老是犯同样的错误。
2·With their minds so occupied by research, many scientists are careless about how they live.
因为他们满脑子都是研究，许多科学家不太管顾他们的生活。
3·Children can be careless about things like that, and he won't make a big fuss about it unless it becomes a regular thing.
孩子们在这种事情上可能会粗心大意，但除非这成为常态，否则他不会大惊小怪。
4·He is careless about his future.
他对前途漫不经心。
5·We are careless about using energy.
我们不节约使用能源。
6·He is careless about his appearance.
他不讲究外表。
7·I said he is careless about his work.
我说他经常工作很粗心。
8·He couldn't careless about my tribulations.
他对我的苦难的关心少到不能在少。
9·Many scientists are careless about how they live.
许多科学家在生活中都很粗心。
10·How many times we have been careless about our life?
多少次我们曾经对人生漠然？