It conceals their approach. 掩盖了他们的脚步

109. that people have brought to the city in considerable numbers.
     数量可观的家畜
110. The pigs keep their family close.
     猪喜欢群居
111. The ceaseless noise of the city plays to their advantage.
     城市里无休止的嘈杂为金钱豹提供了便利
112. It conceals their approach.
     掩盖了他们的脚步
113. And the leopards are using this cover to hunt all over the city.
     金钱豹利用掩护能在全城各地捕猎
114. This is a thriving population.
     这个种群日益繁荣
115. In fact, the highest concentration of leopards in the world
     事实上 世界上金钱豹数量最多的地方

来自《行星地球 第二季 第六集 Planet Earth S02E06 城市》第 112 行