translation - How do you translate 下沉市场 to English? - Chinese . . . 市场 here refers to 消费市场 (consumer Market) 下沉市场 (downward reaching consumer Market) refers to the expanding market (from the city area with high population density and high-income population) to the rural areas (with low population density and low-income population but much larger area)
grammar - when is the suffix 边 面 required? - Chinese Language Stack . . . there happen to be certain differences between usages of different nouns of locality which simply have to be learned, e g NP +上、下、前、后、里、内、外、中、间 exist，while 东、西、南、北、左、右 cannot be used the same way, also depending on whether referring to space or time or sequence order 前、后 are used