get your hands dirty
US /ɡɛt jʊər hændz ˈdɜr.ti/
UK /ɡɛt jʊər hændz ˈdɜr.ti/

1.
手を汚す, 実務に携わる
to do physical work, especially work that is unpleasant or involves getting dirty
:
•
He's not afraid to get his hands dirty and help with the gardening.
彼は手を汚すことを恐れず、ガーデニングを手伝う。
•
The CEO often comes to the factory floor to get his hands dirty with the workers.
CEOはよく工場に来て、従業員と一緒に手を汚す。
2.
手を汚す, 不正なことに加担する
to become involved in something dishonest or illegal
:
•
He refused to get his hands dirty by participating in the corrupt scheme.
彼は不正な計画に参加して手を汚すことを拒否した。
•
Politicians often try to avoid getting their hands dirty with controversial issues.
政治家はしばしば、物議を醸す問題で手を汚すことを避けようとする。