初中: junior high school, abbr. for...
居民楼: apartment building, residential tower...
与日俱增: to increase steadily, to grow with each passing day...
树梢: the tip of a tree, treetop...
外向: extroverted (personality), (economics etc) export-oriented...
占线: busy (telephone line)...
外贸: foreign trade...
地下室: basement, cellar...
受苦: to suffer hardship...
司空见惯: a common occurrence (idiom)...