2123490 jmdict A [id=1987918] 至難の業;至難の技;至難のわざ;至難のワザ しなんのわざ[至難の業,至難の技,至難のわざ];しなんのワザ[至難のワザ] [1][exp,n] Herculean task; next-to-impossible undertaking