Davison was sentenced to 10 years in prison for manufacturing ricin, a lethal biological poison made from castor beans.

戴维森因制毒素而被判处10年监禁，毒素是一种由豆制成的致命生物毒药。

Probably the most poisonous plant we actually have here is ricin, better known as the castor bean or castor oil.

我们这里最毒的植物可能是毒素，也就是我们熟知的子或油。

The girls fell behind their aunt and peeped out at him from among the castor beans.

女孩们跟在姨妈身后， 从子丛中向外窥视他。

Ricin This deadly protein, extracted from the innocent sounding castor bean, once found its way to President Barack Obama’s mail.

毒素 这种致命的蛋白质是从听起来无害的子中提取出来的，曾经被送到拉克总统的邮件中。

That evening after supper, Carl and Alexandra were sitting by the clump of castor beans in the middle of the flower garden.

那天晚上晚饭后， 卡尔和亚历山德拉坐在花园中央的一丛子旁边。

The toxin it produces, ricin, is a protein found in the castor bean, but the poison itself is made from the mash that's left over after grinding the beans into oil.

毒素是一种蛋白质，存在该植物的含油种子内，可在榨油后留下的豆渣里加以提炼。

Taken orally its LD50 is about 20 milligrams per kilogram of bodyweight, about 8 castor beans worth of the poison, but if it's injected, like the way Markov got it, it's just 1 tiny microgram per kilogram.

口服时，LD50 约 20mg/kg，约 8 颗子所含的量。若注入体内，像可怜的 Markov，LD50 只需约 1µg/kg，是前一剂量的两万分之一。