You can translate that title into Chinese as: **关于在线接受信用卡的 30 个核心问题:支付网关与安全性**
This keeps it clear, formal, and faithful to the original meaning
If you want, I can also offe
**信用卡在线支付:PCI 合规、退款争议、国际交易、PayPal vs Stripe vs Square**
- **信用卡在线支付** — Credit Card Payments Online
- **PCI 合规** — PCI Compliance (Payment Card Industry Data Security Standard