So, there are many levels of formality.

因此，正式程度有多个层次。

And they reported lower levels of commitment to school and more modest educational aspirations.

而且据反映，他们学习投入程度较低，学习志向也不够远大。

Exams rank different levels of mediocrity, that's all.

考试把平庸者分为了不同等级 仅此而已。

They have lower job turnover. They have lower levels of attrition.

工作流动率更低，员工也会更专心工作。

Thirty municipalities and provinces have activated their highest emergency response level.

中国30个省市启动最高级别应响应。

These three sentences show three levels of formality.

这三个句子表现了正式程度三个层次。

Pollution in Springfield has reached crisis levels.

斯普林菲尔德污染已经到了危状态。

This is particularly good at reducing stress and anxiety levels.

这特别有助于减轻压力水平。

Its coastal areas are threatened by rising sea levels.

其沿海地区受到海平面上升威胁。

And I'm a bit worried about my cholesterol levels.

我有点担心我胆固醇水平。

Researchers tested 80 prisoners to gauge their levels of psychopathy.

研究人员对80名囚犯精神病程度进行了测试。

Different nations have different levels of coronavirus cases.

不同国家确诊病例数有所不同。

They are living through extreme weather events and rising sea levels.

他们生活在极端天气海平面上升威胁之中。

But there are different levels of cold.

但是有不同程度冷。

The move is due to global warming and rising sea levels.

此次搬迁是由全球变暖海平面上升所致。

Scientists controlled the light levels in rooster habitats.

科学家们控制了公鸡住所光照强度。

And levels of melatonin, the hormone that helps regulate sleep cycles, dropped.

帮助调节睡眠周期褪黑素也减少了。

Despite taking prenatal vitamins with iron, 58% of the women had iron levels below normal.

尽管孕妇在产前服用了含铁维生素，但仍有58%孕妇体内铁含量低于正常水平。

Yes, I realize it would be entry level.

是，我了解这是基层职务。

Humans experience lower levels of gravity in space.

人类在太空中重力水平较低。