the economy of mountainous areas的用法和樣例：
例句
- The vulnerable infrastructural facilities are the bottlenecks that constrain the economic development in Wulin Mountain Areas.
摘要基礎設施薄弱是制約武陵山區經濟發展的瓶頸。 - The economic and social development level of these areas, to a certain extent, affects the process of building all Jiangsu into a better-off society.
丘陵山區經濟社會發展水平在相當程度上影響江蘇全面建設更高水平小康社會的進程。
