Lesson 4 [00:03.02]第四单元 [00:06.03]1.Just practise ; [00:07.30]1.练习 [00:08.57]What's that in English It's a goat. [00:11.14]那个用英语怎么说? 它是一只山羊. [00:13.71]What's that in English It's a goat. [00:16.27]那个用英语...