Trepanning
开[套]孔, 打眼, 穿孔(试验)
🗣️ 情景例句
It's too hard to explain.
这很难解释清楚。
I'd appreciate it if you would turn out the lights.I'm sleepy.
如果你关灯我将感激你的.我困了。
If fifty pence pieces are not exchanged for sweets, they rattle for months inside money boxes.
如果50便士不拿来换糖吃，则可以放在储蓄罐里叮当响上好几月。