您要查找的是不是：
- the purr of an engine. 机器的隆隆声
- Those are the components of an engine. 那些是发动机的部件。
- We heard the sound of an engine idling. 我们听到发动机空转的声音。
- The throttle of an engine,as of an automobile. 油门，风门汽车等发动机上的节流阀
- The throttle of an engine, as of an automobile. 油门，风门汽车等发动机上的节流阀
- To reverse the action of an engine. 逆转使引擎逆向运行
- I heard the slap of the chains, the stiff, jerky rasp of the wipers, the purr of the engine. 我听到车轮防滑链的拍打声，雨刷费劲地急速摆动发出的刺耳声音，引擎低沉的声音。
- I shall never understand the workings of an engine. 我永远搞不懂发动机的工作原理。
- There are two ports in the valve of an engine. 一台发动机的阀门上有两个通气孔。
- All parts of an engine are rigorously gauged. 一个机器的所有零件都是经过精确测量的。
- The work of an engineer requires intelligence plus experience. 工程师的工作需要才智，还要经验。
- the purr of a contented cat/a car engine 惬意的猫发出的呼噜声；汽车发动机的隆隆声
- The loud, roaring noise of an engine operating at high speed. 呜呜声高速运转的机器的高且喧闹的噪音
- The loud,roaring noise of an engine operating at high speed. 呜呜声高速运转的机器的高且喧闹的噪音
- The stroke of an engine piston moving away from the crankshaft. 蒸汽机或其他发动机的活塞离开曲轴运动时的冲程。
- From the rear of his launch, Kabaraijian watched it fall, and listened to the sounds of twilight over the purring of the engine. 卡巴罗健坐在汽艇的尾部，一边望着太阳缓缓下沉，一边倾听着引擎轰鸣声之外黄昏的声音。
- Napoleon conquered by the force of an iron will. 拿破仑攻无不克靠的是坚强的意志。
- The loud humming heard by most sighters of UFOs is, in fact, the purring of several hundred tabbies. UFO目击者所听到的巨大的嗡嗡声，实际上是数百只背上绑着黄油面包的猫的哀叫。
- The stroke of an engine piston moving toward the crankshaft. 蒸汽机或其他发动机中活塞向曲轴推动的冲程。
- I see the vase in the window of an antique shop. 我在一家古玩店的橱窗里看见了那个花瓶。
