随着应用程序的流行，用户数量也会大幅度增加，而且这种增加是多种形式的。
When an application grows in popularity, the number of customers using it can increase greatly, and the increase can be manifold.
而且这种状况只会随着HDD密度和容量的增加而变得更坏。
And this type situation has only worsened as the density and capacity of HDDs have increased.
这种方法不仅能增加沼气的收集量，而且能增大垃圾填埋场的容纳量，因为垃圾腐烂过程中体积会变小。
That should increase not just the amount of methane collected but also the capacity of the landfill, since waste shrinks as it rots.
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