Salufer
氟硅酸钠
🗣️ 情景例句
Sweetheart .... Sit down right here.
心肝宝贝……就坐在这里。
We'd like to hear what you say concerning the matter of packing.
我们很想听听你们在包装方面有什么意见。
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。