Swinging from branch to branch, a young chimpanzee moves quickly through the trees. Chimps usually walk on all fours but are also able to walk upright on two legs.

• 从一根树枝摇到另一根树枝，这只年轻的猩猩在树林里迅速穿梭。猩猩通常四脚行走，但是也可以两脚直立行走。