Troponoid
环庚三烯酮型化合物
🗣️ 情景例句
I'm tired and hungry.
我累了， 也饿了。
Draw not your bow till your arrow is fixed.
事未齐备，切莫妄动。
I am very well. Did you have a good summer holiday?
我很好。你暑假过得好吗？