穷乡僻壤: remote villages; a district shut off from the outside world; an obscure village; a remote, backward place; back lands; back-water; poor, out-of-the-way place; in the depth of the country;
这里过去是穷乡僻壤现在铁路公路都畅通了: this formerly inaccessible place can now be reached by road and rail