求翻译：相对来讲，山区小学由于经济落后，教学设施陈旧，交通不便，教师及学生的学习、生活条件较差以致于学生流失率高，则班级人数过少，有的合并为一所学校，或者采用复式班上课。是什么意思？

Relatively speaking, the mountain elementary school due to economic backwardness, teaching facilities antiquated, inconvenient transportation, teachers and students to learn, poor living conditions of the high turnover rate so that the students, the class size is too small, some merged into one scho

Relatively speaking, the mountain elementary school due to economic backwardness, teaching facilities, convenient transportation, and old teachers and students in their study, poor living conditions and to the students' high turnover rate, the class size is too small, and the merge in a school or a

Relative says, because the mountainous area elementary school the economy is backward, the teaching facility is obsolete, the transportation is inconvenient, the teacher and student's study, the living condition are bad the student rate of personnel loss to be high, then class and grade population t

Relatively speaking, mountain primary school due to economic backwardness, the teaching facilities of the old, limited transportation, poor living conditions for teachers and students to learn, that the high wastage rate of students, the class size is too small, all merged into one school, or compou

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