自然发生的

The paper analyzes the causes of seepage of asphalt felt roofage and puts forward the repairing ways on partial damage of waterproof roofage.

传统使用沥青油毡屋面目前仍大量存在,由于受自然环境长期侵它因素影响,防水层经常发生局部损坏而造成渗漏。

Smoking the weed naturally leads to romp in the sheets, though we are spared watching the attack of the munchies that occurred post-nookie.

吸杂草自然导致欢蹦乱跳介绍，尽管我们不遗余力关食袭击发生后nookie。