Ethylenediamine
乙(撑)二胺
🔁 扩展释义
【化】 1,2-乙二胺【医】 乙二胺
🗣️ 情景例句
I just received your letter and I want to let you know my opinion on your plans for the future.
来信已收到，我想告诉你我对你将来打算的看法。
I got a dozen eggs.
我拿了一打鸡蛋。
it must be known to any kind of radio astronomer in the universe.
这个频率是宇宙中任何射电天文学家都应该熟悉的。