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sterile
adj
1 (of plants, animals or humans) not producing or not able to produce seeds, young or children （指植物、 动物或人）不产生种子的, 不能生殖的, 不育的
Medical tests showed that he was sterile. 医学检查表明他没有生育能力.
2 (of land) that cannot produce crops; barren （指土地）不能长庄稼的, 不毛的, 荒瘠的.
3 (fig 比喻) (of discussion, communication, etc) producing no useful results; unproductive （指讨论、 联系等）无结果的, 无效果的
a sterile debate 毫无结果的辩论.
4 free from germs, bacteria, etc 无菌的; 消过毒的
sterile bandages 无菌 带
An operating theatre should be completely sterile. 手术室应该完全无菌. Cf 参看 fertile.
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