sterile nucleus

例句：

1. 1. The soil was so poor that it couldn't support any plants, making it completely barren.
   土壤非常贫瘠，无法支持任何植物生长，因此完全荒芜。
2. 2.The couple had been trying for years to have a child, but they were still sterile.
   这对夫妇尝试了多年才想要孩子，但仍然不育。
3. 3. The scientist discovered that the eggs of the species were sterile, meaning they could not reproduce.
   科学家发现这种物种的卵是不育的，意味着它们不能繁殖。