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

戴维森因制造蓖麻毒素而被判处10年监禁，蓖麻毒素是一种由蓖麻豆制成致生物毒。

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， 从蓖麻子丛中向外窥视他。

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

我们这里实际拥有最毒物可能是蓖麻毒素，更广为人知名称是蓖麻子或蓖麻油。

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

蓖麻毒素 这种致白质是从听起来无害蓖麻子中提取出来，曾经被送到巴拉克奥巴马总统邮件中。

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一丛蓖麻子旁边。

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.

蓖麻毒素是一种白质，存在该物含油种子内，可在榨油后留下豆渣里加以提炼。

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 颗蓖麻子所含量。若注入体内，像可怜 Markov，LD50 只需约 1µg/kg，是前一剂量两万分之一。