Keep in mind, this is not a nuclear reaction, but a simple chemical explosion that often (as in this case) results in little or no radioactive material being leaked into the outside world.

注意，这并不涉及核反应，只是简单的化学爆炸，它基本不会导致放射性物质泄漏出来。

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People should keep in mind that all chemical additives may pose potential dangers to human health, depending on the amounts used, Li said.

李刚说，人们应了解，所有的化学添加剂都可能对人体造成潜在危险，关键取决于其用量大小。

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Swiss scientist Albert Hofmann took an unexpected journey of the mind in April 1943 when he accidentally absorbed one of his chemical discoveries, lysergic acid diethylamide, through his fingertips.

1943年4月，瑞士科学家阿尔伯特·霍夫曼不小心在指尖粘了一点麦角酸二乙基酰胺，从而进行了一次意料之外的心灵之旅。

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But you actually need to keep a few caveats in mind as you do this, which is the fact that trends predict a lot of chemical properties, but they can't predict everything in terms of biological properties.

不过在你使用的过程中,需要牢记一些注意事项,那就是元素周期律可以预言很多化学性质，但是不能预言一切性质,比如生物学性质。

麻省理工公开课 - 化学原理课程节选

Whereas alcohol and substance abuse has a chemical addiction, the buzz from gambling is a mental state of mind which is desirable.

BBC: NEWS | Business | The growing allure of online poker

At issue is whether absinthe needs to contain minimum levels of two substances - anethole and the chemical thujone, a toxin extracted from wormwood, which reputedly has mind-altering effects.

BBC: Europe