求翻译：在北京市十八个区县各设有多个对外培训机构，政府投资建设和社会机构加盟培训中心共四十余所，计算机总台数为4000台左右。是什么意思？

Each has a number of external training institutions in 18 districts and counties in Beijing, government investment in building and social organizations to join a total of four dozen or more of the training center, computer total number of units for 4000.

Beijing's 18 districts and counties in the there are several external training institutions, the government investment in building and social institutions joined training center has a total more than 40 computers, total number of the 4000 around Taiwan.

Is equipped with many foreign training organization in the Beijing 18 area counties, the government invests the construction and the social organization alliance training center altogether 40 institutes, the computer main station number is respectively about 4000.

Each of the 18 districts and counties of Beijing city hosts a number of foreign training institutions, government investment construction and social institutions to join training centers with a total of more than 40, total number of computers is about 4,000.

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