n.手术刀；解剖刀
A scalpel is a surgical instrument. 手术刀是外科器械。
This is the scalpel which Norman Bethune used in those days. 这是当年白求恩大夫用的手术刀。
In the biology lesson, the teacher dissected a frog with a scalpel. 生物课上老师用手术刀解剖了一只青蛙。
