1. From the early 1960s to the present, the region has planted 70 million trees and hillsides closed off for forest conservation reached 140,000 hectares a year. 
   六十年代初至今，全区植树7000多万株，每年封山育林约14万公顷。
2. classification of closed surfaces 
   闭曲面的分类
3. Darkness closed around us. 
   黑暗笼罩着我们。
4. The mob closed in. 
   暴徒围攻过来
5. The problems closed in. 
   问题纠结在一起

查看更多例句 相关情景会话

• 1. 封闭区域
  close regulation精确调节...closed region封闭区域...clustered aggregates集合体聚集；组合设备
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• 2. 闭区域
  闭拟流型 closed pseudomanifold...闭区域 closed region...闭Riemann面 closed Riemann surface
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