这是个粗心大意造成的错误。
他犯了一个粗枝大叶的错误。
Don't make such a careless mistake.
不要犯这样粗心的错误。
Don't make such a careless mistake again.
不要再犯这种粗心的错误了。
How could you make such a careless mistake?
你怎么能犯这么粗心的错误？
I hope you won't make a careless mistake again.
我希望你不会在犯这样粗心的错误。
I don't know how I made such a careless mistake.
我不知道我怎么会犯这么个愚蠢的错误。
I made a careless mistake in the report. Please accept my apology.
我在报告中犯了个不小心的错误，请接受我的道歉。
We had never expected to make such a careless mistake in the project.
工程中出现这样的纰漏是万万没有想到的。
It's careless of you to make such a mistake.
你犯这样的错误真是粗心。
How careless (it is) of him to make such a mistake!
他是不小心，才会犯下这种错误！
How careless (it is) of him to make such a mistake!
他是不小心，才会犯下这种错误！
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