en_tn/dan/05/05.md

At that moment

"As soon as they did that" or "Suddenly"

plaster

cement or mud that is spread on walls or ceilings to give them a smooth hard surface when it dries

the king's face changed

"his face became pale." This was caused by his fear.

his limbs

"his legs"

his knees were knocking together

This was the result of his extreme fear.