具有必备的服务设备和完善的数据安全保护措施；
They have the necessary service facilities and shall take effective measures to ensure the security of their data.
这里不那么明显的另一点是Ajax的安全保护措施。
Another thing that isn't evident here is the Ajax security precautions.
其次，遮住照片、视频和音频入口向来是一种划算的基本安全保护措施。
The second is that covering photo, video and audio portals has long been a basic and cheap security safeguard.
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