Trepanning
开[套]孔, 打眼, 穿孔(试验)
🗣️ 情景例句
Is it a two-bedroom house?
是两个卧室的吗？
All work and no play make Jack a dull boy.
尽量学，尽情玩。
No one suspected that there might be someone else on the farm who had never been seen.
谁也没想到农场竟会有一个从未露面的人。