名词
中文翻译：鸟的标记
同义词：
["bird's mark", "bird's signal例句：1. The hunter used a bird's sign to track the bird's location.（猎人使用鸟的记号来追踪鸟儿的位置。）"]
例句：
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1. The hunter used a bird's sign to track the bird's location.
猎人使用鸟的记号来追踪鸟儿的位置。
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2. Bird's signs can be found on many birds' feathers.
在许多鸟类的羽毛上可以找到鸟的记号。
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3. The bird's sign was so distinctive that it helped us find the bird.
鸟的记号非常独特，帮助我们找到了那只鸟。