Another type of block replaced clay bricks in the late 20th century. It was the Cinder block, made mostly with concrete.

在20世纪晚期，另一种块材取代了粘土砖，这就是所谓的煤渣砌块，它们大都由混凝土制成。

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Another type of block replaced clay bricks in the late 20th century. It was the Cinder block, made mostly with concrete.

在20世纪晚期，另一种块材取代了粘土砖，这就是所谓的煤渣砌块，它们大都由混凝土制成。

youdao