Fallup
n. 放射性尘埃对海洋地区的污染
🗣️ 情景例句
I really feel bad about it,
我真过意不去。
This part of the country is very mountainous.
这个国家这一部分有很多山。
Early next morning, she heard planes passing overhead and wondered how she could send a signal.
第二天一大早，她听到头顶上有飞机飞过，但不知道怎样才能发个信号。