1. The aircraft engine roared to life as the plane prepared for takeoff.
飞机引擎隆隆作响，飞机准备起飞。

2. The maintenance crew is currently working on repairing the aircraft engine.
维修人员正在修理飞机引擎。

3. The pilot reported a problem with one of the aircraft engines and had to make an emergency landing.
飞行员报告说飞机引擎出了问题，不得不进行紧急着陆。

4. The aircraft engine is a complex piece of machinery that requires regular maintenance.
飞机引擎是一个复杂的机械装置，需要定期维护。

5. The aircraft engine manufacturer announced a new model with improved fuel efficiency.
飞机引擎制造商宣布推出一款燃油效率更高的新型号。

6. The aircraft engine malfunctioned mid-flight, causing the pilot to divert to the nearest airport.
飞机引擎在飞行中出现故障，导致飞行员转向最近的机场。