Phaeoretin
大黄树脂
🗣️ 情景例句
Good morning. Restaurant Service. May I help you?
早上好，餐厅服务部，能为你效劳吗？
I'm free tomorrow.
我明天有空。
and the search for oil has done more to improve deep drilling than any other mining activity.
寻找石油比其他任何采矿业对改进深孔钻探作的贡献都要大。