operační sál s prosklenou stěnou k pozorování operace

By midnight I was in an operating theatre in Inverness having an ankle fixed. (BNC)

A surgeon who fails to take action to help the recovery of a patient prostrate in front of him in the operating theatre is hindering his recovery. (BNC)

For example, observation in a fracture clinic or operating theatre can be arranged. (BNC)

zdravý jako rybička/buk/řípa

Better keep fit as a fiddle and ready for anything.(BNC)

He was fit as a fiddle when he was a hundred, doing his own gardening. (BNC)

Mind you I saw her two day's ago and she looked absolutely fit as a fiddle so I said. (BNC)