In this case the verb may be understood.

在这种情况下这动词可以省略。

I really can't understand his amorphous ideas.

我真的弄不懂他那些乱七八糟的想法。

He esteemed that he understood what I had said.

他认为已经听懂我说的意思了。

The significance of a green traffic light is generally understood.

人们通常都明白绿色交通灯的含义。

These technical terms are difficult for the layman to understand.

这些专门术语是外行人难以理解的。

Everybody must be made to understand that.

务必让每个人都懂得这一点。

Even a child can understand the book.

连孩子都能看懂这本书。

It is understood that you will come.

相信你会来的。

Understanding this article is beyond my capacity.

我看不懂这篇文章。

Only the lawyer can understand this agreement.

只有那律师才懂得这份协议。

You must understand the necessity of education.

你必须懂得教育的必要性。

You have not understood; allow me to elucidate.

你没理解,让我解释一下。

The youth was fortunate in having understanding parents.

这个青年有通情达理的父母, 真幸运。

She intuitively understood his need to be alone.

她凭直觉就知道他需要独处。

She managed to make herself understood in English.

她设法用英语表达自己的意思。

I fully understand the fears of the workers.

我完全理解工人们的担心。

Am I to understand you are staying the night?

我猜你晚上留下，对吗?

I understand that I am being slated for promotion.

我知道我正被定为晋升的人选。

They built a robot capable of understanding spoken commands.

他们制造了一个能懂口头指令的机器人。

He was beginning to understand the seriousness of life.

他渐渐地懂得了生活的严肃性。