Facebook just blew your mind, paying $19 billion for WhatsApp, a start-up that has more than 450 million active users, but which drew surprisingly little in the way of buzz ( a conscious decision by the site's founders, it turns out). It's not every day you see a little-discussed, private company go for that much money, and we can already hear the debate about it starting.
Facebook斥资190亿美元收购初创企业WhatsApp可能令人大感震惊，但外界对该交易的批评之声却出奇的少（这证明Facebook创始人做出的这一收购决定是明智的）。这并不是我们经常听到的关于“一家名不见经传的私人企业卖出高价”的故事。我们已经听到了有关该交易的一些讨论。
Here are the raw numbers, just to help inform the debate:
以下是一些原始数据，可以帮你了解相关讨论：
$19 Billion The total value of the deal: $4 billion in cash, $12 billion in stock, and $3 billion in restricted stock.
190亿美元：收购交易的总估值为190亿美元，其中40亿为现金，120亿为股票，30亿为限制性股票。
$1 Billion Break-up fee should the deal not go through.
10亿美元：若交易告吹，Facebook将向WhatsApp支付10亿美元解约费。
7.9% WhatsApp's employees will hold about 7.9% of Facebook's total Class A common stock and restricted stock.
7.9%：Facebook向WhatsApp员工发放的Facebook A类普通股和限制性股票将占到Facebook总股本的7.9%。
$104 billion Facebook's valuation at the time of its IPO.
1,040亿美元：Facebook在首次公开募股(IPO)时的估值为1,040亿美元。
$16 Billion Amount Facebook raised in its IPO.
160亿美元：Facebook通过IPO筹资160亿美元。
$25 Billion Twitter's valuation at the time of its IPO.
250亿美元：推特(Twitter)在IPO 时的估值为250亿美元。
$2.1 Billion Amount Twitter raised in its IPO.
21亿美元：推特通过IPO筹资21亿美元。
$1 Billion Price Facebook paid for Instagram in 2012.
10亿美元：Facebook在2012年斥资10亿美元收购Instagram。
$8 Million Amount of capital invested in WhatsApp in 2011 by Sequoia Capital.
800万美元：Sequoia Capital在2011年向WhatsApp注资800万美元。
2009 Year of WhatsApp's founding, by Brian Acton and Jan Kourn, former Yahoo employees.
2009年：WhatsApp创建于2009年，创始人为前雅虎(Yahoo)员工阿克顿(Brian Acton)和Jan Kourn。
400,000,000 The number of active users, according to a December blog post from WhatsApp.
4亿人：据WhatsApp在去年12月份的一篇博文中称，其活跃用户数为4亿人。
450,000,000 The number of active users, today, according to Facebook's press release.
4.5亿人：Facebook的新闻稿称，目前WhatsApp活跃用户数为4.5亿人。
70% Percentage of users who are active on the app on a daily basis.
70%：上述用户中的70%每天都在使用WhatsApp。
1,000,000 The company says it's adding more than 1 million new users a day.
100万人：WhatsApp称，当前每日新增注册用户超过100万人。
945,000,000 Monthly active users on Facebook, as of Dec. 31.
9.45亿人：截至去年12月31日，Facebook的月活跃用户数为9.45亿人。
50 The number of employees at WhatsApp
50：WhatsApp的员工人数为50人。
Five: WhatsApp is the fifth most downloaded app on Android devices.
第五：WhatsApp是安卓(Android)设备下载量排名第五的应用。
Zero Number of ads that appear on WhatsApp. The service doesn't sell ads.
零：WhatsApp上的广告数量为零，该应用程序不刊登广告。