单词	moldboard
释义	moldboard noun mold·​board ˈmōl(d)-ˌbȯrd  1 : a curved iron plate attached above a plowshare to lift and turn the soil 2 : a blade on a machine (such as a bulldozer) that pushes material to one side as the machine advances Word History First Known Use 1508, in the meaning defined at sense 1
随便看	out of humor out of it out of joint out of keeping with out of kilter out of line out of luck out of necessity safety straps safety switch safety switchboard safety tread safety tube safety valve safety valves safety zone safety-deposit safety-fund system safety/strength in numbers safetying safetyman safetymen saffi saffian saffians

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