facetime

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，显示视频和图像是何时并由谁制作的，要么完全放弃电话，转向基于数据的通信——使用 FaceTime 或 WhatsApp 等应用，这些应用可以与你的身份挂钩。

FaceTime with a relative as you strength train or stretch at home.

当你在家进行力量训练或伸展运动时，可以与家人视频通话。

Add a Front-Facing Camera and facetime.

添加前置摄像头和facetime。

Demonstrating the new FaceTime video-calling feature.

展示新的FaceTime视频通话服务特性。

The second is the question of a front-facing camera and FaceTime.

其次是关于前置摄像头和FaceTime。