natural

a.自然界的；正常的；天赋的

national park, national service, National Trust, nationalism, nationalist, nationalistic, nationality, nationalization, nationalisation, nationalize, nationalise, nationally, nationwide, native, native speaker, native-speaking, nativity, nativity play, NATO (also Nato), natter, nattily, natty, natural childbirth, natural gas, natural history, natural law, natural philosophy, natural selection, naturalgas, naturalism, naturalist, naturalistic, naturalization, naturalisation, naturalize, naturalise, naturally, naturalness, nature, nature study, nature trail, naturism, naturist, naturopath,