Ppx
[计]= Packet Protocol eXtension,包规约扩充
🗣️ 情景例句
The main course: steak and potatoes.
主菜 牛排和马铃薯。
What's the price of that electric iron?
那个电熨斗的价格是多少？
They will be arriving here tomorrow.
明天就要到达此地。