The boy is so careful that he makes few mistakes in English grammar.

这个男孩很细心，他的英语语法很少出错。

youdao

The regards shouldn’t be so careful but it must be sincerely to be moved.

问候不一定要慎重其事，但一定要真诚感人。

youdao

Mrs. Wang: Isn’t it sad that we have to be so careful and worry about the air we breathe?

王女士：连呼吸的空气我们都还得担心受怕，这不是件令人悲哀的事吗？

youdao

She nodded her head as she touched and smelled the flowers that her father had been so careful to avoid.

VOA: special.2009.05.23

And in that--I'm so careful, perhaps the blocks are numbered, I'm so careful that every block is in the exactly same position as in the case where my son built it.

我搭的非常仔细，也许这些积木都编了号，但我搭的很仔细，所以每块积木,都在我儿子之前搭那座塔时,摆在的位置上。

耶鲁公开课 - 死亡课程节选

So it's a way of reminding you, I've got to be careful about the types of things that I put in.

因此我这是在提醒你，一定要对输入的东西的类型,多加注意。

麻省理工公开课 - 计算机科学及编程导论课程节选

But if they're busy they maybe don't stick to the criteria and they're not so careful.

BBC: Devolution points way to different types of NHS

The candidates, knowing they're under scrutiny, are now so careful when opening their mouths.

CNN: Why social media will reveal French election winner

You have to be so careful with everything you do now, everyone you meet, everywhere you go.

BBC: Shane Watson & Brad Haddin 'approached' by bookmaker