They propagate slowly, but they produce very toxic smoke.

它们传播缓慢，但会产生剧毒烟雾。

The fungus is so virulent it can wipe out whole colonies of ants.

这种剧毒菌类足以杀死整个蚂蚁群落。

Dudley and Piers wanted to see huge, poisonous cobras and thick, man-crushing pythons.

达力和皮尔想有剧毒大眼镜蛇和攻击巨蟒。

To make this even worse, Mars' soil is filled with very toxic perchlorate salts.

更糟糕是，土壤充满了剧毒高氯酸盐。

What's not entirely clear is why this tree went so overkill on the toxicity.

我们对它剧毒成因尚不完全了解。

In the poison bed, Frances is showing me hemlock, a highly poisonous, herbaceous flowering plant.

在有毒植床区，弗朗西斯正在给我毒芹，这是一种剧毒草本开花植物。

Word is she was on some pretty heavy duty study drug.

有人说她在服用了重量剧毒药物。

Dudley and Piers wanted to see huge, poisonous cobras and thick, man-crushing pythons. Dudley quickly found the largest snake in the place.

达力和皮尔想有剧毒大眼镜蛇和攻击巨蟒。达力快就找到了馆里最大一条巨蟒。

Lead is an extremely toxic heavy metal and studies have linked exposure to it to significant health and developmental problems, especially for kids.

铅是一种剧毒重金属，研究表明，接触铅会导致严重健康和发育问题，尤其是对儿童而言。

I'm sure you'll be aware that some of these are edible, and they're delicious, but some of them are highly poisonous.

我相信你知道其中一些是可食用，而且非常美味，但有些是剧毒。

The last culprit you need to know about is Carbon Monoxide. It is an odourless, colourless and extremely poisonous gas.

你需要知道最后一个罪魁祸首是一氧化碳。它是一种无味、无色剧毒气体。

That was the idea which occurred to me the instant I saw the drawn muscles of the face.

我一发现他那面部肌肉收缩情形，就想到是中剧毒现象。

Instead of commonly used highly toxic substances, Townsend discovered that it can be done with nontoxic salts.

而且特温斯德发现可以使用无毒盐来替代通常使用剧毒物质。

Beware of methylated alcohol, which is very poisonous and should never be added to drinking water.

要提防甲基化酒精，那是剧毒，永远不能掺入饮用水。

Lastly, nitrogen oxide is another extremely poisonous gas at high levels of concentration which deadens feeling in the throat and lungs causes swelling in the throat and a buildup of fluids in the lungs.

最后，二氧化氮是另一种高浓度剧毒气体，它会减弱喉咙和肺部感觉，导致喉咙肿胀和肺部积液。

Experts describe it as a very toxic chemical that can kill even in very small amounts.

专家表示，这种剧毒化学药品即便少量使用也能致死。

Don't eat mushrooms, as many are highly toxic, so it's not worth the risk.

不要吃蘑菇， 因为多都是剧毒， 所以不值得冒险。

I used to pick up lethally poisonous stinging jellyfish and sing to them.

我曾经捡起剧毒带刺水母， 然后唱歌给它们听。

To be honest, there's probably nothing that poisonous near where you live.

说实话，你居住地方附近可能没有什么剧毒植物。

As you know, that's very, that's poisonous.

你知道，那非常，那是剧毒。