1. immunodeficiency

    🇬🇧/ɪˌmjuːnəʊdɪˈfɪʃnsi/ 🇺🇸/ɪˌmjuːnoʊdɪˈfɪʃnsi/ n.[生]免疫缺陷
  2. nod

    🇬🇧/nɒd/ 🇺🇸/nɑːd/ n. 点头;打盹;摆动
  3. nodded

    🇬🇧/ˈnɒdɪd/ 🇺🇸/ˈnɑːdɪd/ v. 点头;打瞌睡;摇动(nod 的过去式)
  4. nodding

    🇬🇧/ˈnɒdɪŋ/ 🇺🇸/ˈnɑːdɪŋ/ adj.点头的,低垂的,昏昏欲睡的