不了解

In the beginning of the twenty-first century, we don't know everything, we have to be humble

在20世纪初，我们不了解的每一件事，我们必须谦虚。。。。

2 I don\'t get it.

我不了解。

I don't understand what's going on i ide these young people's heads.

我不了解这些年轻人的脑子里想的是什麽。

I have no idea what the young man think .

我不了解这些年轻人的脑子里想的是什么。

I have no idea of that young man.

我不了解那个年轻人

Honestly, even today I have no idea what kind of man Tong is.

其实我到现在都不了解童讯到底是怎样一个人。

They are ignorant of/about what happened.

他们对所发生的事不了解。

Most of us are ignorant of the value of health.

我们大多数人不了解健康的可贵。

He's quite ignorant of things abroad.

他对国外的事情很不了解。

She is very ignorant about her own country.

她对自己的国家很不了解。

The reasons of iron ions content overproof in grade Ⅱ desalting water system,such as variation water quality,contamination of regenerant , operation adjustment of pretreatment system and switching operation of bed were discussed.

对二级脱盐水系统中铁离子含量超标的原因，如来水水质发生波动、再生剂受到污染、预处理系统操作调整、床体运行切换等进行了论述。

You were hired to drum up new business, so go and do it.

公司雇你招徕新业务，你就做你的事好了。