Asthma attacks can be triggered by pollen, dust, harsh chemicals or scents.

花粉、灰尘、刺激性化学物质或气味可引发哮喘。

How do you protect metals from harsh chemicals?

如何保护金属不被刺激性化学品腐蚀？

Never use harsh chemicals that can discolor the boot.

千万不要使用强效化学物质，以免靴子褪色。

Use cleaning products with harsh chemicals as little as possible.

尽量少使用含有刺激性化学物质的清洁产品。

For example, PET is harder to shatter, while PVC is more resistant to harsh chemicals.

比如说，PET 更难粉碎，而 PVC 对刺激性化学品更有抵抗性。

Including fungi, bacteria, dirt, pollen, harsh chemicals, and even dust mites.

包括真菌、细菌、污垢、花粉、刺激性化学物质，甚至尘螨。

Well, I've never liked using harsh chemicals, darling.

我从来都不喜欢用刺激性化学用品，亲爱的。

It's these harsh chemicals that keep that bright red dress bright red for so many years.

正是这些刺激性化学物质让那件鲜红色的裙子多年来一直保持鲜红色。

And it's a 30 SPF. You know, there are a lot of really harsh chemicals in conventional sunscreen.

这是一个 30 SPF。你知道，传统防晒霜中有很多非常刺激的化学物质。

This method avoids harsh chemicals and preservatives, and instead uses mushrooms and other microorganisms to help in decomposition.

这种方法避免使用刺激性化学物质和防腐剂，而是使用蘑菇和其他微生物来帮助分解。

Well, a lot of other things love it too, including fungi, bacteria, dirt, pollen, harsh chemicals, and even dust mites.

嗯，很多其他东西也喜欢它，包括真菌、细菌、污垢、花粉、刺激性化学物质，甚至尘螨。

Kilometres below the ocean surface, they relentlessly belch out searing hot water rife with harsh chemicals from beneath Earth's crust.

在距离海面数公里以下的地方，它们不断地从地壳下喷出充满刺激性化学物质的灼热热水。

After 27 years of excessive heat and harsh chemicals, my hair was beginning to show extreme signs of wear and tear.

经过 27 年的高温和刺激性化学品，我的头发开始出现极度磨损的迹象。

Women in Kenya's Kisumu County are increasingly turning to synthetic hair to enhance style and Aesthetics as well as to avoid health risks associated with harsh styling chemicals, such as relaxers.

在肯尼亚基苏木县，越来越多的女性开始使用人造头发，以提升造型和美观，同时避免与刺激性造型化学品（如放松剂）相关的健康风险。

That metal instead requires a process called hydrometallurgy in which old batteries are crushed and the resulting " black mass" is treated with harsh chemicals known as lixiviants.

相反，这种金属需要一种称为湿法冶金的工艺，其中将旧电池粉碎，然后用称为浸出剂的刺激性化学物质处理所产生的“黑色物质”。