Celloide
[法]瑟尔卢瓦德(粘胶纤维原液染色用颜料)
🗣️ 情景例句
Ellen.
Ellen。
By the way,who are you waiting for?
顺便说,你正在等谁？
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，