求翻译：表1说明目前农村地区小学英语教学班级过大，最大的班级竟然达87人之多，而且大班多集中于条件相对较好的城镇学校，而偏远的山区小学由于校舍破旧、教学条件较落后、学生生活环境较差以致于学生流失率高，班级人数过少，有的山区学校不得不2一3个学校合并为一个，甚至有的学校不得不采用复式班上课。是什么意思？

Table 1 shows that the rural areas, primary school English teaching classes too large, the largest class even up to as many as 87 people, and large classes are more concentrated in relatively good conditions in urban schools, and a remote mountainous area elementary school old school building, teach

Table 1 shows the current rural primary school English teaching classes, even the largest classes of up to 87 people, and the courses focus on relatively better condition townships, schools, and elementary school in remote mountainous areas of the campus buildings, and teaching students in a backwar

Table 1 explanation at present countryside area elementary school English teaching class and grade oversized, the biggest class and grade reaches 87 human of many unexpectedly, moreover the kindergarten class for six and seven year olds concentrate in the condition relative good cities school, but f

Table 1 description currently rural area primary school English teaching class had large, maximum of class has up 87 people of more, and class more set Yu conditions relative better of town school, and remote of mountain primary school due to school old, and teaching conditions more behind, and stud