Edna
[化] 二硝基乙胺
🗣️ 情景例句
But your L C must reach us 30 days before delivery.
但交货前30天，我们必须要收到你们的信用证。
What color is your book?
你的书是什么颜色？
'Do you always catch such an early train?' asked the inspector.
“您总是赶这样早的火车？”探长问。