N,n'-carbonyldiimidazole
[化] 羰二咪唑
🗣️ 情景例句
you've made a very strong impression
你已经留下了非常深刻的印象
How about this instead?
不然这样好不好？
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。