目的为提高儿童郎格罕细胞组织细胞增生症（LCH）的预后，在复习文献基础上对DAL-HX83/90方案进行改良并观察其初步疗效。
Objective Explore the result of modified DAL-HX83/90 protocol in childhood Langerhans cell histiocytosis (LCH) in order to improve the treatment result of LCH patients.
作者从学习文化对语言掌握的重要性、可行性及其途径这三方面论述了英语教学中应重视文化差异对语言的影响。
It also emphasizes the cultural distinctions and their effects on language, and illustrates the importance, feasibility and the teaching methods of the cultural distinctions.
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