in pair

• 成双成对

in pair的用法和样例：

例句

1. A small cube marked on each side with from one to six dots, usually used in pairs in gambling and in various other games.
   骰子一个小的正六面体，每面分割为一副六个点，通常为一对，用于赌博或其它游戏中
2. Cuff-links are only sold in pairs.
   袖扣论对卖。