A nonzero timeout is useful in real-time or other situations where an alternateaction may be required if an object is not readily available.
在实时情况或其他情况(如果无法很快获得对象则或许需要替代操作)下，非零超时会很有用。
2
Seepage action can influence the intensity of soil, and the development of cracks that come forth under the dry-wet alternateaction reinforces force of seepage action.