/'θrɒtl; `θrɑtl/
v
1 [Tn] seize (sb) by the throat and stop him breathing; choke; strangle 扼（某人）的颈部; 使窒息; 勒死
*throttled the guard before robbing the safe 勒死警卫然後抢保险箱
* (fig 比喻) accused the government of throttling the freedom of the press 谴责政府扼杀新闻自由.
2 (phr v) throttle (sth) back/down control the supply of fuel, steam, etc in order to reduce the speed of (an engine or a vehicle) 控制燃料、蒸汽等的供给以降低（发动机或车）的速度.

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.