mechanical device造句 31. An engine is a mechanical device that produces some form of output from a given input.12 英文造句amphibolousdeacidificationodorantdefragmentexothermreference listcellobiosefrancis crickjames watsontaklimakan desertbase ratetangible goodslodgepolecontrailpkusimulantcooling agentcorseletspottingeye droppercharlie chaplinmicroscope slidemioceneertglenncommon-lawfiacrepaper bageight ball