Nitramide
[化] 硝酰胺
🗣️ 情景例句
I'll set up an appointment with the marketing people.
我会与行销部的人安排一次会谈。
To drop
掉下
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。