I don 't get it.not a trace of tetrodotoxin .

我搞不懂。?有河豚毒素的??。

The poison , tetrodotoxin , is extracted from puffer fish .

这种毒药，也就是河豚毒素，是从河豚身上提取出来的。

What do you know about tetrodotoxin ?

你对河豚毒素知道多少?

Tetrodotoxin is the potent poison that can turn fugu into a final meal .

河豚毒素作为一种剧毒绝对能让你的河豚宴变成最后的晚餐。

A rough-skinned newt one of the garter 's favorite bits of prey can contain enough tetrodotoxin to kill seven humans .

一条皮肤粗糙的蝾螈，束带蛇最爱的猎物之一，携带了足以杀死七个人的河豚毒素。