Senators were briefed on the ricin Tuesday night.

周二晚上，参议员对蓖麻毒信事件进行了讨论。

Those two letters have tested positive for ricin in a preliminary check.

这两封信件在初步检查中被检测出含有呈阳性的蓖麻毒素。

A similar letter addressed to a US senator in Washington also tested positive for ricin.

发往华盛顿一名参议员的信件也显示蓖麻毒素阳性。

Initial tests on those two letters indicated they were tainted with a poison called ricin.

而初步检测称这2封信被一种称为蓖麻毒素的毒药所 “污染”。

NPR's Dina Temple-Raston, who says completing conclusive tests for ricin will take several days.

NPR新闻的迪娜·特普尔·拉斯顿报蓖麻毒素道检测的完整结果需要几天。

The agency says the substance in both letters has tested positive in preliminary tests for poisonous ricin.

两封信件都被初步检测出蓖麻毒素。

When the oil is heated the ricin protein denatures or changes shape, which renders it harmless.

榨取的蓖麻油中虽含有毒素，但可借由加热，使蛋白质变性而去除毒性。

But when inhaled, ingested, or injected, untreated ricin is readily absorbed by the body's cells.

如前所述，未被加热破坏的蓖麻毒素若被吸入、食入、或注入体内，会迅速的进入细胞。

The Canadian woman suspected of trying to mail the poison ricin to the White House is accused of threatening President Trump.

涉嫌试图向白宫邮寄蓖麻毒素的加拿大女子被控威胁特朗普总统。

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的致命生物毒药。