名词中文翻译1
中文翻译：Unknown
同义词：
['test flight engine', 'test aircraft engine']
例句：
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1. The engineers are conducting a flight test on the new engine.
工程师们正在对新引擎进行飞行测试。
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2. The test flight was a success, but the engine failed during the landing.
试飞成功了，但降落时引擎出了问题。
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3. The company is investing heavily in developing new flight test engines.
该公司正大力投资于开发新的飞行测试引擎。