美国一大猩猩为保持双手清洁而直立行走!

A male gorilla at the Philadelphia Zoo is taking a stand against dirty hands by opting to walk on two legs.

日前，费城动物园一只雄性大猩猩为避免弄脏双手，竟然选择直立行走。

Apparently, 18-year-old Louis is a clean freak.

显然，18岁的路易斯是个有洁癖的猩猩。

When Louis has his hands full of tomatoes or other snacks, he walks upright like a human to keep food and hands clean, rather than the typical gorilla stance of leaning forward on his knuckles.

当路易斯的双手满是西红柿或其他零食时，他就像人类一样直立行走，来保持食物和双手的清洁，而不是以典型的大猩猩姿势--身体前倾，撑在指关节上行走。

Michael Stern, curator of primates and small mammals, says workers had to install a fire hose over a mud puddle in the yard.

灵长类动物和小型哺乳动物园区管理人迈克尔·斯特恩表示，工人们必须在院子里的泥坑安装了一条消防水带。

The nearly 500-pound, 6-foot-tall primate crosses it like a tightrope to avoid getting dirty.

这只近500磅、6英尺高的灵长类动物，为了避免弄脏自己，会小心翼翼地穿过去。

Stern says it's "pretty unusual" for gorillas to walk around upright. In the wild, Western lowland gorillas like Louis might do it for a few seconds to reach food or wade into swamps.

斯特恩称，大猩猩直立行走“非常罕见”。在野外，像路易斯这样的西部低地大猩猩，可能会为了取食物或涉入沼泽地，而直立行走几秒钟。