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.

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到达胃中混合之后，葡萄酒的成分阻止了在肉类消化过程中释放的有害的化学物质的合成。

If the two mix in the stomach, compounds in the wine thwart the formation of harmful chemicals that are released when meat is digested.

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但我们知道有害的化学物质被用于塑料中，有些会浸出有害物质危害我们的健康，而且对这些情况我们并非完全了解。

But we know that hazardous chemicals are used in plastics, and some of those plastics will leach chemicals that may be harmful to our health, and we don't know the full extent of that.

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