For protection from the summer sun, the Mojave lived in open-sided, flat-topped dwellings known as shades, each a roof of poles and arrowweed supported by posts set in a rectangle.
For protection from the summer sun, the Mojave lived in open-sided, flat-topped dwellings known as shades, each a roof of poles and arrowweed supported by posts set in a rectangle.
each a roof of poles and arrowweed
each a roof of poles and arrowweed that are being
with each being a roof of poles and arrowweed
with roofs of poles and arrowweed to be
with roofs of poles and arrowweed that are
请问each a roof of poles and arrowweed supported by posts set in a rectangle 是什么意思?