1. According to one survey, one woman in eight is infertile. 根据一项调查，每8个妇女中就有1个不能生育。
2. Cycads removed from their native habitats—and therefore from insects native to those habitats—are usually infertile. 从原生栖息地移走的苏铁，以及从原生栖息地的昆虫身上移走的苏铁，通常是不育的。
3. The land was barren and infertile. 这片土地荒芜而贫瘠。
4. But the purple pitcher plant, which lives in bogs and infertile sandy soils in North America, enlists other organisms to process its food. 但是这种紫色的猪笼草，生活在北美的沼泽和贫瘠的沙质土壤中，吸收其他生物来作为它的食物。
5. Archaeological excavations indicate that the Rapanui went to heroic efforts to protect the resources of their wind-lashed, infertile fields. 考古发掘表明，拉帕努伊人为了保护他们狂风肆虐的贫瘠土地上的资源，付出了英勇的努力。
