Tetragonal
a. 四角形的
🗣️ 情景例句
Why can't you do both?
为什么不能两样一起做？
Hurray!
万岁！
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。