1. Aiming at characteristics of frigid zone in this paper, we developed and exploited three kinds of solar-energy preservation pigpens available for frigid zone. 本文针对北方地区冬季气候寒冷、持续时间长的特点，研制和开发了三种适应高寒地区的太阳能保温猪舍。
2. Aiming at characteristics of frigid zone in this paper, we developed and exploited three kinds of solar-energy preservation pigpens available for frigid zone. 本文针对北方地区冬季气候寒冷、持续时间长的特点，研制和开发了三种适应高寒地区的太阳能保温猪舍。
3. Safe dairy zone, cold tea, milk tea, garden stuff, coffee and other drinks zone, snack and sweet foods zone, well-known liquor zone, green and organic foods zone, and comprehensive foods zone; 安全乳品展示区，凉茶、奶茶、果蔬、咖啡等饮品专区，休闲食品及甜食专区，名酒专区，绿色及有机食品专区，食品综合区；
4. It displays an entire series of plants in vertically ecological distribution, ranging from the tropical zone, temperate zone and frigid zone . 它展示了几乎生态区整个的植物系列，覆盖热带、温带、寒带。
5. It displays an entire series of plants in vertically ecological distribution, ranging from the tropical zone, temperate zone and frigid zone. 松树一般生长在寒带和温带地区，品种很多，四季常青。人们把它当作长寿的象征。
