Female black widow spiders eat their mates.

雌的黑寡妇蜘蛛会吃掉它们的配偶。

Well-known cannibals, like the praying mantis and black widow spider, were considered bizarre exceptions.

已知的同类相食者，如螳螂、黑寡妇蜘蛛曾被视为是奇怪的特例。

Something like a black widow spider just has a handful of chemicals in its venom.

像黑寡妇蜘蛛的毒液中只有少量化学物质。

It squinted up at him like a black widow spider.

它像黑寡妇蜘蛛一样眯着眼睛看着他。

Let me tell you about this black widow spider I saw today.

让我给你讲讲今天看见的黑寡妇蜘蛛。

Scientists have made progress in characterizing black widow spider venom but getting a genome sequence has proven difficult.

科学家们在描述黑寡妇蜘蛛毒液的特征方面取得了进展，但事实证明获得基因组序列很困难。

So, researcher's think a microbe's gene somehow got transferred into the ancestor of both the house and black widow spider.

因此，研究人员认为微生物的基因以某种方式转移到了房子和黑寡妇蜘蛛的祖先身上。

On each side of the doors, in the angle of the wall a nice fat black widow spider sat in its casual untidy web.

在门的每一侧， 在墙的角落里， 一只肥大的黑寡妇蜘蛛坐在它随意凌乱的网中。

Next time you think you see a black widow spider I want you to say: " Dad, excuse me, but I believe a poisonous insect is in the house."

下一次你以为自己看见黑寡妇蛛的时候，我希望你说，“爸，打扰一下，我觉得家里进了一只有毒的昆虫。”

In California for example---living in most of the garages in California---you get black widow spiders which are quite small but they are certainly more dangerous than tarantulas.

例如在加利福尼亚州——住在加利福尼亚州的大部分车库里——你会看到黑寡妇蜘蛛，它们很小，但它们肯定比狼蛛更危险。