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。

youdao

Thoughtful men should not to be careless about the drought.

体贴的人不应该对乾旱攷虑不周。

youdao

No one ( cares about) if he (appears) at the meeting next year or not. If (it happens) he will (be made to) apologize for his careless comments.

没人关心他是否会在明年的会议上露面。如果他来了，就不得不为自己的出言不慎而道歉。

youdao

There are fears that people determined to keep taking their favourite herbs may go online and choose to buy them from merchants who may be careless about quality or potency.

BBC: Herbal remedies face licence rule

The real villains, according to Antonia Fraser in this well-researched and emotively narrated life, were the journalists and cartoonists who pilloried the queen, creating a monster from one whose chief crime was to be careless about her public image.

ECONOMIST: 18th-century French history

And he subsequently built his political life on themes of redemption, reform, and became the scourge of lobbyists, the champion of campaign finance reform and so on, yet according to some of the people who know him best, he can be surprisingly careless about his reputation.

NPR: Is McCain's Reputation at Issue?