For one, Acton was already 38 when he helped build WhatsApp.

WhatsApp, the popular chat tool, uses Signal's software to encrypt its messaging.

很受欢迎的聊天工具WhatsApp使用Signal的软件为自己的通讯信息加密。

WhatsApp claims 450 million people use its service each month and 70% of those people are active on a given day.

WhatsApp称，每月有4.5亿用户使用他们的服务，其中70%是日活跃用户。

What isn't clear is how much revenue WhatsApp makes& the company declined to comment on its sales.

目前还不清楚WhatApp的收入情况，该公司对其销售方面的问题不予置评。

WhatsApp wants 'to get out of the way. We want to let people have a conversation.'

他说，WhatsApp希望放弃不必要的东西，让人们顺利交流。

Why is Facebook buying WhatsApp for$ 19 billion?

为什么Facebook要拿出190亿美元巨资收购WhatsApp？

Like its founder, WhatsApp is a quiet company.

和其创立者一样，WhatsApp也是个不事声张的公司。

I began with WhatsApp, the easiest for getting started and creating chat groups.

我最先测试的是WhatsApp，这款应用程序最容易上手，也最容易创建群聊。

But for the next few months or few years my focus will be on WhatsApp.

但在未来数月或数年的时间里我的工作重点将是WhatsApp。

However, none of Facebook's other apps has the same high level of encryption as WhatsApp.

然而，Facebook的其他应用都没有像WhatsApp这么高强度的加密。

This is the first time that WhatsApp has shared any user data with its parent.

这是WhatsApp首次与母公司共享用户数据。

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。

Facebook also recently acquired the messaging service WhatsApp for$ 19 billion.

最近，Facebook又以190亿美元的价格收购了通讯服务应用WhatsApp。

Why do you chat using Facebook Messenger or WhatsApp, also owned by Facebook?

为什么要用Facebook Messenger或同样隶属于Facebook的WhatsApp聊天呢？

That might mean either developing a uniform way to mark videos and images, showing when and who they were made by, or abandoning phone calls altogether and moving towards data-based communications — using apps like FaceTime or WhatsApp, which can be tied to your identity ．

这可能意味着要么开发一种统一的方式来标记视频和图像,显示视频和图像的制作时间和制作者,要么干脆放弃电话,转向基于数据的通信——使用FaceTime或WhatsApp之类可以与你的身份绑定的应用程序。

WhatsApp have more 600 million users.

WhatsApp的用户超过6亿人。

WhatsApp built its business on the idea of offering instant messaging without the fees that carriers often charge.

WhatsApp建立公司业务的理念是，提供一种无需向运营商支付费用的即时通讯服务。

WhatsApp is particularly popular outside of the U.S.

WhatsApp在美国以外特别流行。

and Facebook's messaging services, Messenger and WhatsApp.

以及Facebook的通讯服务——Messenger和WhatsApp。

WhatsApp destroyed the SMS market in five years where it would have taken 20, 30, 40 before.

WhatsApp在5年时间里摧毁了短信市场，而过去这个过程会需要20、30甚至40年。

Today, WhatsApp has close to 1bn users sending 30bn messages a day.

如今，WhatsApp拥有近10亿用户，每天发送300亿条信息。