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| Russian | English |
| из другой оперы | a horse of a different color (chiefly US, informal: That's what we'll do when he gets here. But if he doesn't show up … well, that's a horse of a different color  merriam-webster.com Shabe) |
| из другой оперы | that is another book (Himera) |
| не на что опереться | not have a leg to stand on (в плане аргументов: Since there was no contract with provisions for quality control, legal jurisdiction, arbitration, etc., I fear that the client doesn't have a legal leg to stand on against the contractor. 4uzhoj) |