Vocabulary consisting only from characters you are able to read
足りない
たりない
(1)insufficient/not enough/lacking/ (2)dim-witted/slow/one brick short of a full load adj
人工
じんこう
artificial, manmade, human work, human skill, artificialitymix
問う
とう
(1)to ask/to question/to inquire/ (2)to charge (i.e. with a crime)/to accuse/ (3)to care (about)/ (4)without regard to (with negative verb)/(P) godan, leda1, verb, vtrans