Mercaptotropone
巯基酮
🗣️ 情景例句
Here you are.
茶给你。
A book that remains shut is but a block.
有书闭卷不阅读，无异是一块木头。
both men were genuinely sorry that they had to leave.
这二位不得不离开那个荒岛时，还真的感到遗憾呢！