?社交网络social network; ?上市be listed; ?发行issue; ?股票share; ?股市stock market; ?股东shareholder; ?创始人founder; ?投资人investor; ?投资银行investment bank; ?股票承销商underwriter; ?IPO首次公开发行股票Initial Public Offering. Being the world’s largest social networking group，Facebook is valued at$104bn in an initial public offering. 作为全球最大的社交网络公司，Facebook在首次公开发行中被估值达1040亿美元。