handling sand

• 治沙

handling sand的用法和样例：

例句

1. We found an effective way to control the sand.
   我们找到一种治沙的有效办法。
2. Thus, the physical means, biological means and chemical means have begun to form a comprehensive sand controlling system.
   自此，物理手段，生物手段，化学手段，已开始形成综合的治沙体系。