The Department of Environmental Conservation estimates the optimum population at 60.
据环境保护署估计,鹿的最佳数量为60只。
历年英语六级听力真题(含译文)
Why can't the herd be thinned the old-fashioned way? The small community of North Haven on Long Island is home to some 600 to 700 deer. The Department of Environmental Conservation estimates the optimum population at 60.