Vocabulary consisting only from characters you are able to read
スロバキア語
スロバキアご
Slovakian (language), Slovakmix
難問
なんもん
perplexity, difficult question, difficult problemsuru
計る
はかる
(1)to measure, to weigh, to survey, to time (sound, gauge, estimate), (2)to conjecture, to infer, to surmise godan, verb, vtrans