Pair works, task activities, group works.

同桌互动，任务型活动，小组活动等。

youdao

To know which one, we need to look at the second pair of square brackets, which will tell us the device that still works.

要知道是哪一个，我们需要看看第二对方括号，这告诉我们设备仍然在工作。

youdao

However, where people often go wrong with this is to assume that if this works between one pair of layers, it would work well between another.

然而，人们经常在这一点上犯错误的地方是假定，如果这在一对层之间有效，那么它将会在另一对层之间同样有效。

youdao

Once set up, however, and it works like an absolute dream -- just pair your device to its ad-hoc WiFi network (which kicks in once you've taken your first picture) and images are pushed over in a staggeringly short amount of time.

ENGADGET: Eye-Fi Pro X2 16GB Class 10 hands-on Hands-on

Poole, who mostly works in business class, says she buys a new pair every three months.

CNN: Inside a flight attendant's not-so-glam life

Nintendo's 3DS also has a pair of cameras for capturing scenes in 3-D, and it works quite well.

CNN: 3-D smartphones ditch the glasses