名词
中文翻译：Unknown
同义词：
['trial', 'test run', 'trial run']
例句：
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1. The company is running atrial to see if the new product willbe successful.
公司正在尝试新产品，以确定其是否成功。
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2. The teamconducted a trial run beforethe big game to fine-tune their strategy.
在大赛前，团队进行了一次试运行，以调整策略。
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3. The pilot flewthe plane for the first time, and it was a running trial.
飞行员首次驾驶飞机，这是一次试飞。