关心的

Fortunately, the resource of coal and natural gas is rich in the world, how to make use of these two resources efficiently and cleanly becomes the significant problem that the circle of industry and science technology fully concern about in the world.

由于世界煤和天然气资源十分丰富，如何更经济有效、并洁净地利用这两种资源，是全球工业和科技界十分关心的重要问题。

I think that the U.S. State City was most concerned about is definitely worth.

我觉得说到国美第一城大家最关心的肯定是价值。

You need to keep a very close eye on this window, as this is your primary concern.

你需要时刻盯着这个窗口，因为这是你首要关心的。

Concern oneself about=be concerned about关心,挂念: Don't concern yourself about this matter.

别为这个问题担心。另外，题目中的用法也是一个典型。

That is all you need to concern yourself with.

那才是你所要关心的。

You can find out what issues are of greatest concern and deal with them.

你能找出最关心的问题，并加以处理。

I know this is something that is a concern for you.

我知道这也是你们关心的问题。

My concern is that ...

我关心的是。。。

This is a matter of concern.

这是人们所关心的。

My second concern is that....

我关心的第二个问题是

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。