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1·By kicking off your shoes before you enter the home, you are denying entry to these harmful chemicals.

在你进入家中之前先脱鞋，你就防止了这些有害化学物质入内。

2·Harmful garbage includes lamps, batteries, and other things with harmful chemicals.

有害垃圾包括灯、电池及其他含有有害化学物质的物品。

3·The organization has set strict rules on the release of harmful chemicals.

该组织对有害化学物质的排放制定了严格的规定。

4·It is feared that the harmful chemicals in denim have spread far and wide.

人们担心，牛仔布中的有害化学物质已经到处扩散了。

5·These include plants that have sensors printed onto their leaves to show when they're short of water and a plant that can detect harmful chemicals in groundwater.

其中包括叶子上载有传感器的植物，能显示出它们何时缺水，还包括一种可以检测到地下水中有害化学物质的植物。

6·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.

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。

7·Does secondhand smoke contain harmful chemicals?

二手烟是否含有有害化学物质？

8·But stinging eyes and dry coughs show that harmful chemicals fill the air.

但是人们眼睛刺痛和干咳，说明空气里充满了有害的化学物质。

9·Releasing harmful chemicals into the air and water endangers living things.

释放有害的化学物质到空气和水中会危害生物。

10·How do I know that the sunscreen I am using is safe from harmful chemicals?

如何知道我用的防晒霜是安全的，无化学伤害呢？