perpetual futures

Perpetual futures are the most liquid derivatives in crypto, with no expiry and a funding rate to anchor price.永续期货是加密货币中最具流动性的衍生品，没有到期日，且通过资金费率来锚定价格。

The perpetual futures market lets traders take directional bets with leverage without worrying about contract rollovers.永续期货市场让交易员无需担心合约展期，即可利用杠杆进行方向性押注。