Polyoxymethylene
n. [化]聚甲醛
🗣️ 情景例句
I'm leaving for Beijing on a four-day tour.
我马上要去北京旅游4天。
He's a manager.
他是个经理。
There was danger that the wave would rebound off the other side of the bank and send the dish plunging into the water again.
但是当波浪从河对岸折回来时，就有再次把盘子拖进水里的危险。