Hexyne
己炔
??? 情景例句
Who's Charley Rafer?
誰是Charley Rafer？
Your question is how we developed our product?
你的問題是我們是如何發展我們的產品？
Good morning, Mr. WU:?Here's my homework. I was ill on Monday, so it's late.
吳先生，早上好！這是我的英語家庭作業。我星期一病了，所以遲交。