所以大家一定要小心。

Therefore we should be careful.

youdao

所以大家一定要警惕！

Therefore, we must be vigilant!

youdao

所以大家在选购之前一定要选择好石头的颜色。

So we must select the color of the stone before you buy.

youdao

所以请你们大家一定要来看电影。

So please all of you come and watch.

youdao

所以我们希望大家一定要记住这些教训，以后再避免发生同样的错误！

Therefore, we hope that everybody must remember these lessons, to avoid the same mistakes.

youdao

这句话，我到今天还能记得，大家想想这个印象多深，所以我就认定了自己一定要考大学，第二是我认定了一定要让这个老师失望一次。

This sentence, I remember to this day still, you think about how deep this impression, so I knew that he must be admitted to the University, I have identified second is must let the teacher down a.

youdao

这句话，我到今天还能记得，大家想想这个印象多深，所以我就认定了自己一定要考大学，第二是我认定了一定要让这个老师失望一次。

This sentence, I remember to this day still, you think about how deep this impression, so I knew that he must be admitted to the University, I have identified second is must let the teacher down a.

youdao