translation.en: Then we phase out the food as a lure, and now the dog knows that "sit" means sit, and you can actually communicate to a dog in a perfectly constructed English sentence.
translation.zh: 然后我们再逐步取消食物的引导。 现在狗知道了，“坐下”的意思是坐下。 你甚至可以用完美的英语句子