求翻译：2、自编教材:灵活性强，因材施教，自编自教，体现教师的教学个性。但应有外教参与，保证语言规范，纯正性，客观条件局限性。是什么意思？

Their own teaching materials: flexible, individualized, directed and taught, reflecting the personality of teachers' teaching. Should foreign teachers to participate, to ensure the language specification, pure nature, the limitations of objective conditions.

2, teaching materials, flexibility, self-made suit, since the teachers, the teaching personality. But it should be, and ensure that the language specification, purity, and objective conditions limitations.

2nd, from arranges the teaching material: Flexible, teaches students in accordance with their aptitude, from arranges from teaches, manifests teacher's teaching individuality.Outside but should have teaches to participation, guarantee language standard, pure, detachment condition limitation.

2, self teaching materials: flexible, individualized, self taught, and reflect the teaching of teachers personality. But foreign participation, ensure the language specification, pure, objective conditions limitations.

正在翻译，请等待...