抖音播放https://www.douyin.com/video/7359133621447314751 作者 封面： 简介：学一门外语的秘诀｜TED演讲精选 标题：The secrets of learning a new language演讲人：Lýdia Machová | TED Salon: Brightline Initiative • October 2018#TED #TED演...