但是，有时作业不够认真。
Sometimes, however, not serious work.
youdao
汤姆工作不够认真。
Tom doesn't work carefully enough.
他们在那个年龄不够认真。
I agree. They aren't serious enough at that age.
他历史成绩低说明了他读书不够认真。
His low grade in history goes to show that he didn't study enough.
不是责怪你的不认真，只是责怪自己不够坚定。
Not blame you not seriously, but not enough to blame their own firm.
在那个年纪他们还不够严肃认真。
They are not at that age.
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