我们曾提到可燃混合气是被压进气缸的。在大多数发动机中，可燃混合气是在曲轴箱中受压的。
We mentioned that the air-fuel mixture is delivered to the cylinder under pressure. In most engines, this pressure is put on the mixture in the crankcase.
假设(在大多数情况下)在一次撞鸟事件中飞机将只失去一个发动机。
The assumption is that, under most conditions, a plane involved in a bird strike will lose only one engine.
在全电模式下，通用公司的这款汽车预计行可行驶50英里(合80公里)，足以满足大多数美国通勤者的需求，这样他们只在跑长途的情况下才需要使用汽油发动机。
GM's car is expected to go around 50 miles (80km) in all-electric mode, more than enough for most American commuters, who would need to use the petrol engine on longer trips only.
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