translation.en: Eighteen months later, it's talking to you, and babies' first words aren't just things like balls and ducks, they're things like "all gone," which refer to disappearance, or "uh-oh," which refer to unintentional actions.
translation.zh: 十八个月后， 他就可以跟你交谈了， 婴儿最开始会说的话 不仅仅是球啊鸭子啊这些东西， 还有包括“不见了”表示消失， 或者“啊—哦”表示下意识的动作。