求翻译：投入水平偏低仍然是我国中等职业教育发展的一个重大制约因素，政府、行业企业多元投入的稳定的经费来源保障机制尚未建立，投入增长远跟不上中等职业教育发展的需要。尤其是随着中职近三年每年扩招100万的任务下，很多学校的资源并不能适应扩招的需要，相当一批学校校舍紧缺，教学设施设备跟不上，尤其是实验实训设备缺乏、陈旧，实训基地面积不足，工位不够，师资力量跟不上，尤其是双师型教师缺乏，又没有经费从外面聘请优秀的实习指导教师。国家级和省级重点中职学校在扩招中承担了更多的任务，而且确实报名火爆，但是由于投入没有大的增加，目前基本都已满负荷或超负荷运转。是什么意思？

Input low level remains a major constraint for the development of secondary vocational education in China, Government, industry enterprises multivariate investment sources of stable funding guarantee mechanism has not been established, input growth far need to keep pace with the development of secondary vocational education. Especially as in the vocational near three years annual spread enrollment 1 million of task Xia, many school of resources and cannot adaptation spread enrollment of need, quite group school school shortage, teaching facilities device with not Shang, especially experimental real training device lack, and old, real training base area insufficient, station enough, teachers forces with not Shang, especially double Division type teachers lack, and no funding from outside hired excellent of practice guidance teachers. National and provincial in focus in the vocational school enrollment has taken on additional tasks, and really hot application, but because the input is not increasing, at present are running at full load or overload.