in pair

• Needle - shaped leave borne in pairs , can reach a height of 25m
  针状的松叶成对生长，树高可达25米。
• Noah built an ark , which the animals came on to in pairs
  挪亚建造了方舟，动物们成双成对地来了。
• Remote servers are set up in pairs
  远程服务器是成对设置的。
• Horns are usually in pairs , one on each side of the head
  角一般都是成对的，在头部两侧一边长一个。
• For safty ' s sake , travel in pairs
  为安全起见，要出双入对。
• 4 work in pairs . ask and say when and where things are
  结对练习。就这些事情发生的时间和地点问和说。
• They wandered off in pairs and chatted about their own affairs
  他们成双成对结伴而行，聊着家常小事。
• Find a partner and work in pairs
  找一个伙伴做对子活动。
• Take turns to offer each other the food in part 2 in pairs
  两人一组，轮流请对方吃第二部分列出的食物。
• Please come and eat pears in pairs
  请两人一组来吃梨。