Rough translation:
Do not move the part of your body outside the sand because you are separating sand and water and making the hole more liquid. If you sink, there's a moment when the Archimedes effect stops you from sinking deeper.
Lean forward slowly to spread your weight on the surface of the quick sands and move your legs in a paddlee movement to break the cohesion of sand and water around them so you can free them.
Do not move the part of your body outside the sand because you are separating sand and water and making the hole more liquid. If you sink, there's a moment when the Archimedes effect stops you from sinking deeper.
Lean forward slowly to spread your weight on the surface of the quick sands and move your legs in a paddlee movement to break the cohesion of sand and water around them so you can free them.
