Diolefin
n. [化]二烯
🗣️ 情景例句
That's a good question, Robbie.
这是个好问题， Robbie。
Let me carry your baggage.
让我拿你的行李。
Though they may atttain considerable accuracy in the perception of flat form,
虽然他们对平面形的感觉能达到相当准确的程度，