为什么 Women's Day 要用复数，但 Mother's Day 要用单数？
妇女节英文全称是 International Women's Day，缩写为 IWD。这是为了庆祝女性在各领域做出的贡献而设的节日，是所有成年女性的节日，所以要用复数。类似的还有教师节、儿童节，是给所有教师、所有儿童过节，所以在 Teachers' Day 和 Children's Day里， teacher、child 都用复数。
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Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...
Most rainforests too degraded to provide good habitats 多数雨林退化严重而无法为 ...
Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient world slept only 6.5 hours a night.