Polonide
[化] 钋化物
🗣️ 情景例句
The area of industry you wanted to get into is already at saturation point.
你想进入的待业已经达到饱和点了。
It is a pay phone .
那是一个付费电话。
A pilot noticed a balloon which seemed to be making for a Royal Air Force Station nearby.
一个飞行员发现了一只气球，它像是正飞往附近的一个皇家空军基地。