Syntophyllin
二氢二甲基嘌呤, 二酮与乙二胺的化合物
🗣️ 情景例句
I know. I do.
我知道。我会的。
How long could the buyer expect your product to last?
购买者期望你们产品的使用期是多久呢？
Our next obstacle was a shallow pool of water about half a mile across.
下一个障碍是一片约半英里宽的浅水塘。