Objective: to explore the rule of development of NOS positive neurons in tongue of human fetus.

目的：探讨人胎舌内NOS阳性神经元的发育规律。

youdao

English is not our mother tongue and students lack the environment of training listening and speaking, which restricts the development of students 'oral skills.

但由于我国是英语非母语国家，学生缺乏训练听说的环境，这使学生口语技能的提高受到了很大限制。

youdao

These should be field tested and used in the ongoing development of mother tongue-based literacy implementation and expansion.

UNESCO: OFFICE IN KATHMANDU