Sandcasting
n. 沙型铸造
🗣️ 情景例句
Oh my!
啊！
She's been a bit under the weather recently.
她近来身体不太好。
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。