求翻译：3、原版教材:真实性强，体现外国文化、风土人情，但精华糟粕同现，未必完全适合中国学生，驾驭教材困难。是什么意思？

The original materials: authenticity, reflecting foreign cultures, customs, but the essence of dross and now may not be entirely suitable for the Chinese students, mastering the textbook difficult.

3: authenticity, original materials, reflect foreign cultures, customs, but best with dregs, now may not be entirely suitable for Chinese students, and teaching ability.

3rd, first-edition educational material: Authentic, manifests the foreign culture, the local conditions and social customs, but the essence dregs with presently, not necessarily completely suit the Chinese students, controls the teaching material to be difficult.

3, material: authenticity, and reflect the foreign cultures, customs, but the essence of dross, may not be entirely suitable for Chinese students, control the material difficulties.

正在翻译，请等待...