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

戴维森因制造毒素而被判处10年监禁，毒素是一豆制成的致命生物毒药。

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， 从丛中向外窥视他。

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

我们这里实际拥有的最毒物可能是毒素，更广为人知的名称是或油。

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

毒素 这致命的蛋白质是从听起来无害的中提取出来的，曾经被送到巴拉克奥巴马总统的邮件中。

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.

毒素是一蛋白质，存在该物的含油内，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。