polypoly

例句：

1. 1. The sponge is a natural material with many pores.
   海绵是一种具有许多孔隙的自然材料。
2. 2. Polycarbonate is a type of plastic that has many pores.
   聚碳酸酯是一种具有许多孔隙的塑料。
3. 3. The fabric is made from polyester, which has many pores.
   这种织物是由聚酯制成的，具有许多孔隙。