动词短语
中文翻译：测试飞行
同义词：
['test flight', 'test pilot', "trial fly例句：1. The engineers are conducting a test flight to evaluate the new engine's performance.（工程师们正在进行一次测试飞行，以评估新引擎的性能。）"]
例句：
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1. The engineers are conducting a test flight to evaluate the new engine's performance.
工程师们正在进行一次测试飞行，以评估新引擎的性能。
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2.The test-fly was successful, but the final version is still under development.
测试飞行成功了，但最终版本仍在开发中。
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3.The company plans to test-fly its new product in different markets before launching it on the market.
该公司计划在推出新产品之前，先在不同的市场进行测试飞行。