Lesson 17 [00:03.37]第十七课 [00:06.74]Just speak [00:07.84]说 [00:08.93]Li Yan: Look at this new building! It's our meeting hall. [00:12.17]李燕:看这些新的建筑物它是我们的会议厅. [00:15.41]Mr Black: Oh, it's great! Do you ofte...