对于那些网络速度慢的用户来说，下载时间会很长。
Plus the load time can be far too long for those without high-speed Internet connections.
如果网络速度慢、网络流量大或者Web页面较大，这就显得更加重要了。
This becomes even more important when network speed is low, network traffic is high, or the size of the Web pages is large.
移动计算设备如pda、手机等具有资源少、网络速度慢的特点，因而其接收电子邮件的速度较慢。
Mobile computing devices such as PDA, mobile phone are of limited resource and slow Internet access capability, so the speed of receiving email is relatively slow.
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