形容词
中文翻译：无子的
同义词：
['barren', 'sterile', 'fruitless']
例句：
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1.The couple has two sons, but their daughter is sonless.
这对夫妇有两个儿子，但他们的女儿没有儿子。
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2. The land was barren and uninhabited.
那片土地贫瘠且无人居住。
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3. The scientist's research was fruitless in finding a cure for the disease.
科学家的研究在寻找这种疾病的治疗方法上是徒劳的。