One worry is that kids who spend a lot of time online at home are sometimes unable to socialise properly with other children when they are at school.

一个令人担忧的问题是，在家里花大量时间上网的孩子在上学的时候，有时无法与其他孩子进行适当的社交。

youdao

One worry is jobs, or the lack of them

一种忧虑是就业或缺少就业机会。

youdao

One worry is that more pain is due in Spain, Italy and elsewhere.

其中一种担忧就是西班牙、意大利和其他一些地方仍在遭受更多的磨难。

youdao

And one last expression, one that means do not worry or work too hard.

VOA: special.2009.06.07

One of the advantages of this is, that I don't have to worry about explicitly updating my variable. That happens for me automatically.

这样继续下去，这样做的一个优点是,我不用为更新变量来发愁了,程序会自动的为我进行这个操作，这一点很好。

麻省理工公开课 - 计算机科学及编程导论课程节选

That is why we don't worry about the motion of the nucleus 1 because the ratio of mass is about 2,000 to one.

这就解释了为什么我们不担心,原子核运动起来,因为原子核和电子的质量比约为2000：

麻省理工公开课 - 固态化学导论课程节选

One worry is that people who order online gene tests could get misleading information.

FORBES: Magazine Article

One worry is that some investors will take on risks they aren't prepared to handle.

WSJ: Itchy Investors Ramp Up the Risk

One worry is that long-term use of growth hormone could boost the risk of cancer.

FORBES: Sweet Syringe of Youth