Any other leopard can know 尽管没有直接看到彼此

282. They rub particular rocks with their cheeks
     像这样用脸颊摩擦特定的岩石
283. and then spray them with urine.
     再喷射上自己的尿液
284. The two perfumes create a unique signature.
     两种味道创造出了独一无二的签名
285. Any other leopard can know
     尽管没有直接看到彼此
286. which of its neighbours passed this way,
     雪豹也能判断出
287. without ever making direct contact.
     是哪位邻居曾经到此一游
288. But there are times when snow leopards must come together,
     有些时候雪豹们必须聚到一起

来自《行星地球 第二季 第二集 Planet Earth S02E02 山脉》第 285 行