罗恩花了一个又一个晚上，用魔杖在收音机顶上敲出各种节拍，把调谐钮旋来旋去。
Ron spent evening after evening using his wand to beat out various rhythms on top of the wireless while the dials whirled.
本机组采用罗茨泵作为主泵，以旋片式真空泵作为前级泵。
The set takes Roots pump as its main pump and spinning vacuum pump as pre-stage pump.
罗比。布拉迪为曼联打破僵局，此时主队的防线已经坚守了半个小时。他左脚任意球旋过人墙击败了门将。
Robbie Brady provided the breakthrough for United after almost half an hour of resolute defending by the home side, curling a left-footed free-kick through the wall and in via the goalkeeper's hands.
罗茨式真空泵，罗茨螺杆机组，罗茨旋片机组，罗茨水环机组，罗茨滑阀机组，移动式真空机组等。
Roots Vacuum Pumps, Roots and Vane Systems, Roots and Water-ring Systems, Roots and Piston Systems, Moves Freely Vacuum Systems and so on.
罗茨式真空泵，罗茨螺杆机组，罗茨旋片机组，罗茨水环机组，罗茨滑阀机组，移动式真空机组等。
Roots Vacuum Pumps, Roots and Vane Systems, Roots and Water-ring Systems, Roots and Piston Systems, Moves Freely Vacuum Systems and so on.
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