It can potentially be quite hazardous.

它可能当险的。

Anything over 300 is considered hazardous air quality.

空气质量指数超过300被认有害的空气质量。

Suddenly a lot of hazardous regions were deemed safer.

一夜之间，许多险区被认定较安全区。

To start, not all radiation is hazardous.

首先，不所有的辐射都有险。

The plant itself is still the most hazardous site.

核电站本身仍然最险的地方。

If it breaks it's considered a hazardous waste site.

如果它坏了，就会被认险废弃物。

But we drive on opposite sides, sometimes with hazardous effects.

但我们的行车路侧却截然反，有时这种差异甚至会导致险的后果。

As Ms Williams's example shows, birth can still be botched and hazardous.

正如威廉姆斯女士的例子所表明的，生育仍然可能有险的意外。

Anyway, it would be far too hazardous for my own well-being.

总之，对于我自己的幸福来说，那样太冒险了。

It's an unhealthy, even hazardous problem for parts of India.

对于印度部分地区来说，这一个有害健康甚至险的问题。

C) It is hazardous to leave millions of people poor and vulnerable.

让数百万处于贫困和弱势险的。

Authorities warned that a hazardous eruption is possible within hours or days.

当局警告称，在数小时或数天内可能会出现险的火山爆发。

Lake Michigan's waves turned hazardous for beach-goers in Grand Haven, Michigan.

密歇根湖的巨浪密歇根州格兰黑文的海滩游客带来险。

An early-season snow fall made roads hazardous in central states, including Oklahoma.

这场大雪使得中部城市的道路变得异常险，包括俄克拉何马州。

Their cartographers were literally coloring in these maps and labeling that color " hazardous" .

他们的制图师在这些地图上涂上不同颜色，并贴上" 险" 的标签。

Malaysians wore face masks and schools closed because the air was so hazardous.

马来西亚戴着口罩，校也关闭了，因空气太险。

Have no experience with, but it is tremendously hazardous to life and property.

没有体验过，但对生命和财产有极大的险。

Eighty percent of these, around 200 million, work in dangerous and hazardous conditions.

约2亿（80%）儿童的工作条件极其险。

So how big is the problem of hazardous chemicals left at the site?

因此现场的化品有多大险?

But who on Earth is keeping an eye on this potentially hazardous cosmic blasts?

但到底谁会留意这种宇宙爆炸波的潜在害性呢？