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杨杨d妈咪
他们之间是层层递进的。They are linked by different layers gradually.
无锡捞王
活动环节环环相扣，层层递进Activities link interlocking, progressive transformation望采纳！谢谢！
chocolate宸
“它们三个是属于层层递进的关系”翻译成英文： Three of them belong to the progressive relationship
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