Stanley knife™
noun/ˈstænli naɪf/
/ˈstænli naɪf/
(British English)- a very sharp knife with a short blade in the shape of a triangle that can be replaced
斯坦利刀（刀刃锋利，呈三角形，可更换） Word Originlate 19th cent.: named after the manufacturer, The Stanley Rule and Level Company (now The Stanley Works).