Pydna
n. 皮德纳（马其顿古国城市）
🗣️ 情景例句
When will you be able to deliver?
您什么时候可以交货？
Obedience is the first duty of a soldier.
服从是军人的第一职责。
A sound made by tapping on the hull of a ship will be reflected from the sea bottom,
敲打船体所发了的声音会从海底传回来，