原因調査

げんいんちょうさ

noun

•

investigation (to determine the cause of something)

原	meadow, original, primitive, field, plain, prairie, tundra, wilderness
因	cause, factor, be associated with, depend on, be limited to
調	tune, tone, meter, key (music), writing style, prepare, exorcise, investigate, harmonize, mediate
査	investigate