Aeroradioactivity
大气放射性(强度)
🗣️ 情景例句
Remember that wonderful little balcony
还记得那个美妙小阳台，
The speech thrilled the crowd.
这演说使听众感到振奋。
when the plane suddenly turned round and flew back to the airport.
这时飞机突然调转头来，飞回了机场。