These elements may not be quite as radioactive as plutonium, but if ingested or inhaled, they also pose a risk of causing cancer.

这些元素虽然没有钚的放射性那么高，但如果被吞食或吸入，一样会增加患上癌症的几率。

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Although the fundamental causes of asthma are not completely understood, the strongest risk factors for developing asthma are inhaled asthma triggers. These include.

虽然对哮喘病的主要病因并未完全了解，但患哮喘病的最大危险因素是吸入性哮喘病诱因。

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And although today’s House Republicans have inhaled less hubris than they did in 1995, not all of the newer ones are so sure about the lesson of that year.

并且虽然如今众议院的共和党人比起1995年的傲慢举动来已经收敛了很多，但不是所有的新人都对那年的一课心里有数。

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You have to dry the vaccine without killing the cells in it, and you have to make the particles small enough to be inhaled but not so small that they are exhaled.

FORBES: Chutzpah Science

During the fifties, when my brother and I started chasing butterflies, potassium cyanide was still in use as well, but because it is a deadly poison, Professor Klots recommended liquid carbon tetrachloride, which is "not very poisonous unless inhaled deeply, " and which we persuaded our parents was as innocuous as smelling salts.

NPR: Excerpt: 'At Large and At Small'

We know from studies that individuals who deal with hides of animals can be exposed to spores over an eight-hour period, and as many as 500-1000 spores inhaled over that period do not cause inhalation anthrax.

CNN: "The Secret Life of Germs" author Philip Tierno