Trephining
[医] 环钻, 环锯
🗣️ 情景例句
Littering is a serious offense in some countries.
乱扔垃圾在某些国家是严重的违法。
Necessity and opportunity may make a coward valiant.
需要和机会，可使懦夫变勇敢。
Goodness, six zeros! What can I say?
天那！六个零！我能说些什么呢？