Vietnamese wordchìa khóaIn your course · Chapter 59Part of speechnounLevelB2FrequencyNo. 1,365 in the course corpusMeaningskey to a solution (metaphorical)Source: Tonada courseRelated wordscánh cửadoor panelbức tranhpainting; picturelời khuyênadvicetham quanto go sightseeingban tổ chứcevent organising committeebản ghiwritten recordbản tường trìnhwritten incident reportbị thươngto be injured