parachain

Polkadot parachains share security from the relay chain while running their own custom application logic.波卡（Polkadot）平行链在运行自己的自定义应用逻辑的同时，共享来自中继链的安全性。

Parachain slots on Polkadot are auctioned in DOT, making the slot-acquisition process highly competitive and expensive.波卡上的平行链插槽是用 DOT 进行拍卖的，这使得插槽获取过程竞争异常激烈且成本高昂。