Plotospasmin
鳗鲇神经毒素
🗣️ 情景例句
I have always worn a clip-on bow tie.
我都是用夹上去的领结。
Please sign a copy of our Sales Contract No.156 enclosed here in duplicate and return to us for our file.
请会签第156号销售合同一式两份中的一份，将它寄回我方存档。
Let's do that.
那就这么说定吧？