Pentadecanone
十五烷酮
🗣️ 情景例句
Thanks a lot.
非常感谢。
He who hesitates is lost.
举棋不定，坐失良机。
They talked and laughed happily. Then they saw some banana trees.
他们说说笑笑，很开心。后来他们看见一些香蕉树。