【TED】布魯諾·托圖拉: 有智慧型手機嗎?那開始直播吧 (Bruno Torturra: Got a smartphone? Start broadcasting)┃VoiceTube 看影片學英語
Has anyone among you ever been exposed to tear gas?
在座有人曾經接觸過催淚瓦斯嗎?