Teaching-research group is a professional basic unit of school Subject instruction, through which the teachers can enhance their professional knowledge and exchange instructional experience.

教研组是学校学科教学的一个专业性基础组织，是各学科教师提高专业知识水平，交流教学经验和教学科研成果的基本单位。

youdao

Although Iranian officials are under instruction not even to shake the hands of Americans they meet at international forums, the players say they will exchange shirts with the Americans after the match, regardless of the result.

ECONOMIST: Iran