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1·Tests showed increased levels of toxin in shellfish.

测试表明贝类中的毒素级别上升了。《柯林斯英汉双解大词典》

2·They were close to weaponizing ricin - a lethal plant toxin.

他们快把蓖麻毒素——一种致命的植物毒素——研发成武器了。《柯林斯英汉双解大词典》

3·Other mammals, such as the platypus and some shrews, are venomous, meaning they produce a toxin internally .

其他哺乳动物如鸭嘴兽和一些鼩鼱是有毒的，这意味着它们会在体内产生一种毒素。

4·Postmortem analysis showed the presence of an as yet unidentified virus, as well as evidence of a know bacterial toxin.

尸检分析显示出存在一种未知的病毒，以及一种已知的有毒细菌的证据。

5·Postmortem analysis showed the presence of an as yet unidentified virus, as well as evidence of a known bacterial toxin.

尸检分析显示存在一种尚未识别的病毒，以及一种已知细菌毒素的证据。

6·Although both viruses and bacterial toxins can kill seals, it is more likely that these deaths were the result of the bacterial toxin.

因此，尽管病毒和细菌毒素都能杀死海豹，但这些死亡更有可能是细菌毒素造成的。

7·I found evidence of high-level decisions about the secret Soviet germ-warfare program, which violated the Biological and Toxin Weapons Convention.

我发现了苏联细菌武器计划的高层决策的证据，这违反《生物与毒素武器公约》。

8·In polluted environments, dolphins gradually accumulated toxins in their body fat, and the larger the dolphin, the more accumulated toxin it can tolerate.

在被污染的环境中，海豚体内的脂肪会逐渐积聚毒素。海豚的体型越大，它所能承受的毒素就越多。

9·It was a toxin that was poisoning the family, says Robert Rector, a welfare-reform policy analyst.

“这就是当时在毒害家庭的毒药。”福利改革政策分析师罗伯特·雷克特说。

10·Latrunculin is a toxin produced by sponges.

拉春库林是一种由海绵产生的毒素。