harmful chemicals

基本解释

Airtight plastic bags can help farmers protect their harvests without the use of harmful chemicals.
密封塑料袋可以帮助人们保护粮食收成，而无需使用有害化学品。
But researchers say the notion that water filters all the harmful chemicals in tobacco smoke is a myth.
但研究人员说，认为水可以过滤烟草释放的所有有害化学物质根本就是迷信。
Complex organisms make use of the same components to do all this incredible stuff without any harmful chemicals … In 10 years, all sorts of new stuff will have been done.
这种令人难以置信的微生物是复杂有机体使用同一成分形成的，不含任何有害的化学物质...10年后，各种各样的新的微生物都会研制出来。

The experts said some plant chemicals are high in antioxidants -- substances that remove harmful chemicals from the body.
Another American study found that adding spices to meat before cooking at high temperatures may reduce harmful chemicals.
Miners and chemical workers are at risk of COPD from breathing dust and harmful chemicals.

More seriously, it can release harmful chemicals into the soil and water when dumped, or into the air when burned.
ECONOMIST: Talking rubbish