如果您要从任何应用程序(iOS 或其他应用程序)发出原始 HTTP 请求，那么您可以将浏览器应用程序的密钥"作为 key= URL 参数，它应该足够了(至少对于只读、非身份验证的调用).

If you're making raw HTTP requests from any application (iOS or otherwise), then you can include the "key for browser apps" as the key= URL parameter and it should be sufficient (at least for read-only, non-authenticated calls).