• 1. vast-large: 宽广的 | 巨大的
• 2. vast very large and wide: 辽阔的

• 1.The reason for constructing the buildings from wood is probably that ideally proportioned straight and slender timber was available in large quantities in Scandinavia's vast pine forests.
  用木材建造建筑的原因可能是，比例理想、笔直、纤细的木材在斯堪的纳维亚广阔的松林中大量存在。
  dict.yoduao.com
• 2.As a country boasting a vast territory and encompassing a large population, people in many places of China speak their own dialects.
  中国幅员辽阔，人口众多，很多地方人们都说自己的方言。
  dict.yoduao.com
• 3.China has a vast territory and a large population.
  中国地域辽阔，人口众多。
  dict.yoduao.com

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