He makes unpredictable, arbitrary decisions.他做的决定难以预料, 主观武断.I agree with the skeptic at this point : the change of calendar is an arbitrary conventionalism.我和 无神论 者们一样,认为更换日历是一种专制的传统.You can make an arbitrary choice.你可以随...
让他给家具除尘并把它们擦亮。Let him dust and shine the furniture.真空吸尘器靠抽吸除尘。Vacuum cleaners work by suction.经实际测试表明, 机组的除尘效率达99.Finally , through the actual test, unit's collection efficiency reaches above 99....