en_tn_condensed/exo/27/16.md

The courtyard gate must be a screen twenty cubits long

"You must make a screen twenty cubits long to be the courtyard gate"

The curtain must be made ... fine twined linen, the work of an embroiderer

"They must make the curtain ... fine twined linen, the work of an embroiderer" or "Embroiderers must make the curtain ... fine twined linen"

blue, purple, and scarlet material and fine twined linen

"yarn that is dyed blue, purple, and scarlet," probably wool yarn, or "blue, purple, and scarlet dye" to dye the linen.

an embroiderer

a person who sews designs into cloth