名词
中文翻译：性特征
同义词：
['gender characteristic', 'sex characteristic']
例句：
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1. The study of sexual characteristics is important for understanding human behavior.
研究性特征对于理解人类行为至关重要。
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2. He was born with a sexual characteristic that made him stand out from the crowd.
他出生时具有一种独特的性特征，使他与众不同。
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3. The researcher found that sexual characteristics can have a significant impact on relationships.
研究者发现，性特征对人际关系有着重大影响。