long-chain polymer的用法和樣例：
例句
- The long polymers, in contrast, are generally poor conductors in their pure state.
相比之下，單純的長(cháng)鏈聚合物通常是很差的導體。 - Standard rubber bands, which can stretch up to several hundred percent then snap back into shape, are made from long chains of cross-linked polymers.
標準橡皮筋由交錯連接的長(cháng)鏈聚合物制成，能拉伸至原先長(cháng)度的幾倍，釋放后可縮回原型。
