Polyketone
聚酮
🗣️ 情景例句
And there's no reason why you can't do it from your home.
而且也没有理由你不可以在家里做。
To study the map
研究地图
Twenty or thirty pages of information handed to any of the major world powers around the year 1925 would have been sufficient to change the course of world history.
如果把二三十页的情报交给1952年前后的任何一个世界强国，就足以改变世界历史的进程。