名词
中文翻译：预兆
同义词：
['forerunner', 'portent']
例句：
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1. The storm is giving us a clear indication of what's to come.
暴风雨给我们提供了即将到来的清晰迹象。
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2. The early signs of spring are everywhere.
春天的早期迹象随处可见。
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3. He noticed the first sign of trouble before it became apparent.
他在问题变得明显之前就注意到了第一个迹象。