マネがこの絵を描くまで、女性の裸像は女神に限られていました。

、。

Until Manet painted this picture, female nudes had been limited to goddesses.

Literal

Manet [subject-が] this painting [object-を] draws-until, female nude-figure [topic-は] goddess [to-に] was-limited.

Likely referencing Manet's Olympia (1863), which scandalized Paris by depicting a real woman as a nude rather than a mythological figure. ~に限られる (be limited to) is the passive of 限る. ~ていました marks a past state that held until Manet broke convention. 裸像 (nude statue/figure) is an art term.