Vocabulary consisting only from characters you are able to read
洞
uro; hora
hollow, cavity, hole; cave, den, grottomix
物理法則
butsurihousoku
physical law, laws of physicsmix
元老
genrou
(1)elder statesman, doyen, old-timer, authority, (2)Genro (member of a pre-WWII body that informally advised the emperor) mix