他发动了汽车，汽车平稳地发出嗡嗡声。
警方发动了一次打击毒贩的大规模行动。
The police have launched a major operation against drug suppliers.
机器轰鸣着发动起来。
女士，我来帮您发动汽车。
我们发动了一场声势浩大的广告宣传攻势来推销我们的新型牙膏。
We launch a big advertising campaign to promote our new toothpaste.
汽车发动不起来。你推一下好不好？
让他松一口气的是，引擎发动起来了。
汽车突的一声发动了。
对他们来说，历史是无辜的，它没有带来巨大的财富，也没有发动战争：“这一切都是人，真实的、活生生的人带来的。”
For them, history did nothing, it possessed no immense wealth nor waged battles: "It is man, real, living man who does all that."
定期维修可保持发动机的顺畅运转。
Regular servicing guarantees the smooth operation of the engine.
船上的发动机有节奏地轻轻震动。
发动机劈劈啪啪响了一阵后便熄火了。
发动机现在运转完全正常。
他用废弃的汽车零件重新装配了发动机。
He rebuilt the engine using parts from cars that had been scrapped.
我得把发动机拆开来修理。
我们关掉了发动机，用帆航行以节省燃料。
We used sail power and turned the engine off to save our fuel.
发动机轰隆隆地震动。
我们只好把发动机全部拆开以寻找故障原因。
We had to completely disassemble the engine to find the problem.
突然发动机扑哧扑哧、劈啪作响，然后熄火了。
突然，发动机发出喀喀声、噼啪声，然后就熄火了。
船长知道一台发动机出了故障，不过他不想惊动乘客。
The captain knew there was an engine fault but didn't want to alarm the passengers.
因此，他将应用范围有限且效率低的蒸汽泵改造成了应用范围广泛的蒸汽发动机。
He thereby transformed an inefficient pump of limited use into a steam engine of a thousand uses.
通过高效的蒸汽泵驱动，发动机将矿井中的水排出，这使得矿井可以变得越来越深。
The engine eliminated water in the mines by driving efficient pumps, which made possible deeper and deeper mining.
仅采用甲醇所能实现的最简单的发动机改进措施的车辆，仍将有助于立即减少城市空气污染。
Vehicles incorporating only the simplest of the engine improvements that methanol makes feasible would still contribute to an immediate lessening of urban air pollution.
最后一步是将蒸汽引入气缸，使得活塞前后推动，从而提高了发动机的速度，降低了燃料消耗。
The final step came when steam was introduced into the cylinder to drive the piston backward as well as forward, thereby increasing the speed of the engine and cutting its fuel consumption.
然而，如今电动汽车技术得到最新发展，这意味着它们在性能和安全性方面都可以与传统汽油发动机相媲美。
Now, however, recent developments in electric vehicle technology mean they can match conventional petrol engines in terms of performance and safety.
实际上，这学期我有一个很棒的任务，是关于喷气发动机的，这意味着我要到附近的机场去做几次实地考察。
In fact, I've got a great assignment this term working on jet engines which means I'll be going on a few field trips to a nearby airport.
实际上，这学期我有一个很棒的任务，是关于喷气发动机的，这意味着我要到附近的机场去做几次实地考察。
In fact, I've got a great assignment this term working on jet engines which means I'll be going on a few field trips to a nearby airport.
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