Mitragynine
帽柱堿
??? 情景例句
You're the only one I can trun to.
你是我唯一能依賴的人。
The still sow eats up all the draff.
不聲不響的豬吃光全部的飼料。
We'll let you know the next time we need to place an order.
下次需要訂購時我們會通知你。