underwater exercise meaning in Hindi

Examples

1. While on active duty, from 1975 to 1977, Thalmann conducted a two-year postdoctoral fellowship under the guidance of Claes Lundgren and Hermann Rahn, at the breathing bag placement in rebreathers on underwater exercise.
2. While historians have described the expedition as an underwater exercise in archeology, critics have likened it to graverobbing, saying that it will disturb the burial ground of more than 1, 500 passengers who drowned.