id	keyword
csm-35699	teaching
csm-35699	learning
csm-35699	language
csm-35699	students
csm-35699	communication
csm-35699	study
csm-35699	foreign
csm-35699	english
csm-35699	culture
csm-35699	knowledge
csm-35699	education
csm-35699	thinking