One microgram is the lethal dose for a human being.

只需百万分之一公克的钸，就足以致命。

Isn't that also the same amount of time it takes a lethal dose of secobarbital to kill someone?

这与服下司可巴比妥之后药效发作致人死亡的时间是否吻合呢？

At these astronomical levels 15 minutes is all takes for a human being to absorb a lethal dose of radiation.

在这惊人高辐射值下 人体只要吸收15分钟就足以致命。

Your average adult human would need to eat about 8 kilograms of dark chocolate to get a lethal dose of theobromine.

一般成年人需要吃掉大约8公斤的黑巧克力，才会摄入份量足以致死的可可碱。

It turns out there is a lethal dose of caffeine which is somewhere around 150mg of caffeine per kilogram of your body.

研究证明，咖啡因是有致死剂量的，平均每千克体重大约能承受150毫克的咖啡因。

The fuel rods will remain radioactive enough to emit a lethal dose for tens or hundreds of thousands of years past their removal.

燃料棒在被移除后的数万年至数十万年间，仍将释放出足以致命的剂量。

It would allow that adults with less than six months to live or those with an irreversible medical condition could request a lethal dose of medication.

该法案将允许余下生命不足六个月或具有不可逆病情的成年人申请致死剂量的药物。