Platform Guides
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资金费率会把看对方向的永续合约变成亏损持仓
永续合约没有到期日，因此资金费率就是让合约价格贴近现货的周期性成本。隔夜或长时间持仓前，交易者应先计算这笔费用。
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Funding fees can turn a winning perpetual futures idea into a losing hold
Perpetual contracts do not expire, so the funding rate is the recurring cost that keeps them near spot. Traders should calculate it before deciding to hold leveraged positions overnight.
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交易所App支持通行密钥，但它不是完整安全方案
Binance、Coinbase、Kraken和Crypto.com都在引导用户使用通行密钥或更强认证方式，但交易者仍需要提现控制、备份访问和设备安全习惯。
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Passkeys are useful for exchange apps, but they are not a full security plan
Binance, Coinbase, Kraken and Crypto.com all point users toward passkeys or stronger authentication, but traders still need withdrawal controls, backup access and device hygiene.
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全仓并不比逐仓更安全，它只是把风险分布方式变了
保证金模式应先于杠杆倍数决定，因为全仓和逐仓解决的是资金效率与亏损边界两个不同问题。
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Cross margin is not safer than isolated margin, it just spreads the risk differently
Margin mode should be chosen before leverage because cross and isolated margin answer different questions about capital efficiency and loss containment.
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Reduce-only 与 Post-only 可以帮助合约交易者减少执行错误
这些订单选项不会预测价格，但能在高波动环境中降低误增仓位或意外吃单的概率。
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Reduce-only and post-only flags help futures traders control execution mistakes
These order flags do not predict price, but they can prevent accidental position increases and unwanted taker fills when volatility is high.
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Zapper 关闭提醒 DeFi 用户，不要把持仓记录只交给一个看板
Zapper 计划关闭网站、移动端和 API，说明 DeFi 用户需要可导出的记录和备用组合管理工具。
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Zapper shutting down is a reminder to keep DeFi position records outside one dashboard
The planned shutdown of Zapper’s website, mobile apps and APIs shows why DeFi users need exportable records and backup portfolio tools.