RT: Bitcoin traders are shifting to perpetual contracts — which, unlike traditional calendar futures, don’t expire — as their preferred source of leverage https://trib.al/ORU0QZF
RT：比特币交易员正在转向永久合约——与传统日历期货不同，永久合约不会过期——作为他们首选的杠杆来源https://trib.al/ORU0QZF