bed rock meaning in Hindi

Examples

1. Men of our generation really wanted to be rock and roll stars.
2. The song " Let There Be Rock " was unusual for me.
3. Let's break this down and still have it be rock and roll.
4. Their dream was to go to the US to be rock stars.
5. There could be rock'n'roll ( Fleetwood Mac as house band ? ).
6. For victims of recent heart attacks, the answer appears to be rock bottom.
7. They could not be dug into a layer of bed rock.
8. In reality, only a very few people can be rock stars.
9. Dams must be built on bed rock or highly compacted sub-soil.
10. And, the fact is that personality traits tend to be rock-solid.