I don't think you realise the gravity of the situation.

我认为你没有意识到形势的严重性。

《牛津词典》

I think this one has to realise very deeply.

我认为人必须深深领悟到这一点。

youdao

I think you need to take your time and realise what you're saying.

我认为你必须考虑你的时间和明白你在说什么。

youdao

I think you need to take your time and realise what you're saying.

我认为你必须考虑你的时间和明白你在说什么。

youdao