Tetradotoxin
河豚毒素
🗣️ 情景例句
So, you're an exchange student.
哦，你是一名交换学生。
What kind of climate do you have?Is it cold?
你们那里的天气怎么样？很冷吗？
The deepest holes of all are made for oil, and they go down to as much as 25,000 feet.
在所有洞穴中，为寻找石油所钻的洞是最深的，这些洞可深达25，000英尺。