Declines

短语和例句

population declines   (人口下降)

Fritz Knopf has closely studied the mountain plover, and has tracked population declines.

The most severe population declines occurred in interior regions where fewer aquatic habitats supported fewer otter populations.

Of the eight MSA areas in the Commonwealth, only Ponce and Mayagüez experienced population declines during the 2000-2009 period.