基本解释[商业]常客奖励计划英汉例句双语例句In addition to free drink, the airline offers a frequent-flyer scheme.除了免费饮料，这家航空公司还实施常客奖励计划。frequent-flyer scheme更多例句词组短语短语frequent -flyer scheme detail 常客奖励计划frequent-flyer scheme更多词组专业释义商业常客奖励计划