Octanone
辛酮
🗣️ 情景例句
It was his first date in two years.
这是他两年来第一次约会。
A joke never gains an enemy but often loses a friend.
开玩笑总不能化敌为友，反而有时会失去朋友。
and the outer planets have temperatures near absolute zero and hydrogen-dominated atmospheres.
除此以外，太阳系的其他行星的温度都接近绝对零度，并围绕着以氢气为主的大气层。