Why does the Dropbox desktop app for Mac require Keychain access?
为什么 Mac 版 Dropbox 桌面应用需要钥匙串访问权限？
Keychain is a password management system for Mac. Dropbox requires access to your Keychain to help verify your account and to provide another layer of security over the Dropbox desktop app preferences. To grant Keychain access to Dropbox, click Allow or Always Allow when prompted. Always Allow is recommended for seamless access. Clicking Deny will result in a "Couldn't start Dropbox" error message. For security reasons, Dropbox will not start without access to your Keychain.
Keychain 是 Mac 所用的密码管理系统。Dropbox 需要访问您的钥匙串来验证您的帐户，并在 Dropbox 桌面应用首选项之外为您再添一层安全保护。
要向 Dropbox 授予钥匙串访问权限，请在系统提示时单击允许或始终允许。建议选择始终允许，以实现无缝访问。
单击拒绝，则会显示错误消息“无法启动 Dropbox”。为确保安全，如无法访问 Keychain，Dropbox 将不会启动。