最早的汽车发动机使用的是由玉米和花生油制成的燃料，不是吗？
The earliest car engines ran on fuel made from corn and peanut oil, didn't they?
解决这个问题的方法之一便是混合动力汽车，即既有汽油发动机又有电力发动机的油电混合动力汽车。
One method of solving the problem was a hybrid car, one that ran partly on petrol and partly on electricity.
你看，你的发动机声音把犀牛吓跑了。
You see, the engine is disturbing the rhino, and it ran away.
中国已在西北部城市西安完成最大的固体燃料火箭发动机点火测试。
With a diameter of three meters, the solid-fuel rocket motor ran for 100 seconds after ignition.
中国已在西北部城市西安完成最大的固体燃料火箭发动机点火测试。
With a diameter of three meters, the solid-fuel rocket motor ran for 100 seconds after ignition.
应用推荐