trephinen.
英 trɪ'faɪn; -'fiːn | 美 trɪ'faɪn
中文n. 环锯，环锯术\nvt. 用环锯在……上做手术
环锯，环锯术
vt. 用环锯在……上做手术
词根词源
trephine (n.)an improved kind of trepan, 1620s, from French trephine, which is said to be from Latin tres fines "three ends," but perhaps rather an arbitrary diminutive of trepan. As a verb from 1804. Related: Trephining; trephination.
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