Trephining
[医] 环钻, 环锯
🗣️ 情景例句
Of course. It's on the fifth floor of Building No.4. Let's go there.
当然可以。展室在四号楼五层，我们上去吧。
My mother mailed me a parcel.
我妈给我寄了一个包裹。
Did you enter the contest?
你参加比赛了吗？