已对佛坪自然保护区的大熊猫采用系统采样的方法。
A method of systematic sampling has been adopted for Giant panda (Ailuropoda melanoleuca) in Foping Nature Reserve.已对佛坪自然保护区的大熊猫采用系统采样的方法。
The workers of this nature reserve try to clean it by themselves but their efforts are not enough.该自然保护区的工人们试图靠他们自己来清理,但他们的努力远远不够。