Diolefin
n. [化]二烯
🗣️ 情景例句
Don't worry about it. It's a taken of my appreciation for your business, and friendship.
没关系的。这是向你表示我们在生意及友谊上的一点心意。
If you hadn't slipped and fallen,you wouldn't have broken your leg.
如果你没滑倒,你就不会断腿了。
How did you decide that product was safe?
你怎样决定产品是安全的呢？