8 Three tiger cubs made their debut at the National Zoo in Washington.
8 Three tiger cubs made their debut at the National Zoo in Washington.
三只幼虎在华盛顿哥伦比亚区的国家动物园首次登场露面（哪一个更好？）
8 Three tiger cubs made their debut at the National Zoo in Washington.
三只幼虎在华盛顿哥伦比亚区的国家动物园首次登场露面（哪一个更好？）