形容词
中文翻译：无子的
同义词：
['barren', 'sterile']
例句：
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1.The couple's marriage was anestrous, meaning they had no children.
这对夫妇的婚姻是无子继承的，意味着他们没有孩子。
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2. The scientist discovered a new species with anestrous eggs, which means it can only produce one offspring at a time.
科学家发现了一种新物种，其卵为无子继承的，这意味着它只能一次产下一只后代。
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3. The researcher found that the anestrous eggs were more likely to survive in cold temperatures.
研究者发现无子继承的卵子在寒冷温度下更有可能存活。