n valve controlling the supply of fuel, steam, etc to an engine; lever or pedal operating this 节流阀; 节气门; 风门; （油门或气门的）节流杆或踏板: open (out)/close the throttle 开[关]节气门 * at full/half throttle, ie with the throttle completely/half open 以全[半]速 * take one's foot off the throttle, ie off the accelerator, in a car 脚离开（汽车的）油门踏板.
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