自然发生

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

传统沥青油毡屋面目前仍大量存在,由于受自然环境长期侵蚀及其它因素影响,防水层经常发局部损坏而造渗漏。

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注零食袭击发后nookie。