Glutaconaldehyde
戊烯二醛
🗣️ 情景例句
You guys are like three kids.
你们就像三个孩子。
May I come in?
我能进来吗？
and assuming such an automatic messenger picked up our first broadcasts of the 1920's,
假定外星人的这种自动化信息装置接收到了我们二十世纪二十年代的第一次广播信号，