For some travellers moving into on customer status (B1 or B2), you may Typically be granted authorization to remain for as many as 6 months. Travellers getting into beneath the VWP will receive permission to stay for 90 times only.服务稳定性：镜像服务尽量保持稳定，但由于网络环境不稳定，可能会遇到短暂的访问困�