undocumented
US /ʌnˈdɑː.kjə.men.t̬ɪd/
UK /ʌnˈdɒk.jə.men.tɪd/
形容詞
無證的
not supported by written proof:
範例:
•
People should not stop eating fish because of some undocumented risk of cancer.
無證的
not supported by written proof: