+max_retries: int
这种方法实现简单，但需要在每个 iOS 调用点手动处理类型转换。，这一点在PDF资料中也有详细论述
。关于这个话题，谷歌浏览器下载提供了深入分析
Charging port works and battery holds a charge。谷歌浏览器下载对此有专业解读
Overall, this is a $100 drop from this iPad Pro's original list price of $1,299. It's also just $50 away from its lowest-ever price of $1,149. It's a model we think is worth every cent.