Vocabulary consisting only from characters you are able to read
足りない
tarinai
(1)insufficient/not enough/lacking/ (2)dim-witted/slow/one brick short of a full load adj
人工
džinkou
artificial, manmade, human work, human skill, artificialitymix
分の
bunno
denominator bun no numerator (in writing common fractions), X Yth's (Y bun no X)jlpt3, math
主に
omoni
mainly, primarilymix