Obcerse
n. 硬币正面
🗣️ 情景例句
I'm starving to death.
我饿得快要死了！
That's a conservative point of view.
那是个保守的观点。
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。