Shoes are only sold in pairs.鞋论双卖.The children came in pairs.孩子们两个两个地进来.Little shop - girls went fluttering by in pairs and fours , chattering, laughing.年轻的女店员三三两两蹦蹦跳跳从身边走过, 一边走一边说笑着....

成对地，成双地，两个两个地，双双，成双成对，偶...

in pairs的音标：...