re·trac·tor /rɪˈtræktɚ/
取消前言的人,收縮肌,牽引器
re·trac·tor /rɪˈtræktɚ/ 名詞
牽縮肌
Re·tract·or n. One who, or that which, retracts. Specifically: (a) In breech-loading firearms, a device for withdrawing a cartridge shell from the barrel. (b) Surg. An instrument for holding apart the edges of a wound during amputation. (c) Surg. A bandage to protect the soft parts from injury by the saw during amputation. (d) Anat. & Zool. A muscle serving to draw in any organ or part. See Illust. under Phylactolaemata.
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retractor
n : surgical instrument that holds back the edges of a surgical
incision