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即便愿意付正价的客人，看到身边人都在买折扣券，也会跟风选择，这就让门店陷入了“想服务正价客人、想保持合理利润却不可得”的困境。，更多细节参见同城约会
Google Messages already has a location-sharing feature, but it's more for dropping a static pin on a map. That's fine if you're staying in the same spot, but not much use if you're on the go. The difference here is that the new option updates your location as you move, making it much easier to connect with someone. ，这一点在旺商聊官方下载中也有详细论述
Capability-based file APIs — use openat2 or similar to confine file writes to the work directory, preventing path traversal via ../../etc/passwd