名词
中文翻译：训练指示
同义词：
['training indication', 'training indicator']
例句：
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1. The train indicated that it wasabout to arrive at the station.
火车显示它即将到达车站。
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2. The doctor gave mea training indication before he left.
医生在我离开前给我一个训练指示。
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3. The newsystem uses an electronic training indication to improvesafety.
新系统使用电子训练指示来提高安全性。