The helicopter crash landed when one of its two engines cut out.
直升飞机两个发动机中的一个突然熄火时，直升机撞地着陆。
If one or even two engines failed, the plane could still fly.
如果一个或两个发动机熄火了，飞机可以继续飞行。
Two engines are podded to the helicopter just to the rear of the cockpit.
直升飞机上二台发动机荚舱在驾驶员座舱的后面。
The colonel ordered, "I want two good engines down here asap."
上校命令道：“我要两台好的发动机尽快到这儿”。
We're the two biggest engines in the world to be able to do that.
我们作为全世界两个最大的发动机，能够做到这一点。
It also lets you search and compare results from two search engines side by side.
它还提供从两个搜索引擎搜索和并列比较结果。
See How Two-stroke Engines Work for more information.
更多信息见二冲程发动机工作原理。
There may be one, two or more engines in an airplane.
一架飞机可以有一部，两部或者更多发动机。
I could see it was an airliner because I saw two large engines.
我能注意到它是一架班机因为我看两台大发动机。
Propulsion is made of two high performance diesel engines, to provide power and fuel efficiency.
推进由两个高性能柴油发动机，提供电力和燃油效率。
The aircraft made a forced landing because two of its engines were on fire.
飞机被迫着陆，因为飞机的发动机有两台起火。
The colonel ordered, 'I want two good engines down here asap . '
陆军上校下令：“我这里现在需要两台好机器，越快越好。”
However, there are two drawbacks in current search engines.
然而，当前搜索引擎还存在以下两点不足之处。
However, there are two drawbacks in current search engines.
然而，当前搜索引擎还存在以下两点不足之处。
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