单语范例（未经PONS编辑处理）
They would take the outer layer of the wigwam with them, and leave the heavy wood frame in place.
en.wikipedia.org The nest is a thin cup of sticks with a layer of bark, grass and wool to create a thick mat.
en.wikipedia.org The outdoor cages will have a double net layer; one for safety reasons and the other, outer layer, for plants to grow on.
en.wikipedia.org The risk of condensation can be reduced by avoiding cold bridges, using a vapour control layer to keep moisture out of the wall and by ventilating cold cavities.
www.bdonline.co.uk The matrix is a continuous layer of elongated fibre strands held together by a water-resistant bonding agent.
en.wikipedia.org