这是非常危险的，因为木材和煤炭产生的烟雾中都含有有害的化学物质，会严重污染家里的空气。

This can be really dangerous because there are harmful chemicals in the smoke from both wood and coal and they can seriously pollute the air in your home.

youdao

我镇上的很多青少年都是骑着自行车到处跑，但这是非常危险的，因为交通十分繁忙。

A lot of teenagers in my town bike everywhere, but it's very dangerous because there is a lot of traffic.

youdao

所以，这是非常危险的。

So yes, it is dangerous.

youdao

But what it is quite clear is that it left the hands of government the ability to pick winners and losers and that is a very dangerous power.

但显而易见的是,政府有生杀大权,掌握公司的命运,这是非常危险的权。

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Then you see way back in human histories figures like this where people had to go hunt for their food, and of course there was danger involved in this.

让我们回到人类演化史上,如这张图所示,人们不得不去狩猎觅食,当然,这是非常危险的

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