Pennone
四甲基-2-戊酮
🗣️ 情景例句
Can you speak English?
你会讲英语吗？
Between two stools one goes the ground.
脚踩两只船，早晚要落水。
We're sorry, but we 've had a slight price increase here.
真抱歉，不过我们出只涨了一点点而已。