relayer

A relayer submits the signed meta-transaction on-chain, paying gas and recouping costs from the dApp.中继者在链上提交已签名的元交易，支付 Gas 费并从 dApp 那里收回成本。

Relayers in intent-based architectures compete to fill user swap orders at the best available execution price.基于意图的架构中的中继者相互竞争，以最佳的可用执行价格来完成用户的兑换订单。