Lesson 15 [00:03.32]15课 [00:06.64]1.Just speak [00:08.02]说 [00:09.40]Hi,Miss Wu.This is my son. [00:11.40]嗨,吴小姐.这是我的儿子. [00:13.40]Hello,What's your name? [00:14.86]你好.你叫什么名字? [00:16.33]My name's Gao Wei. [00:17...