Advertisers were also more frequently using performance-based ads - where they pay only when someone clicks on the AD or buys something after seeing the AD.
广告主也更频繁地使用基于表现的广告，这样他们只有在用户看广告之后点了广告或购买物品时才要付费。
The AD sufferers scratched more frequently and intensely than the healthy subjects.
而特应性皮炎患者比健康人士挠痒的频率更高、程度更严重。
If dismounting happens frequently, it is proposed that AD screws should be used for fixing instead of common screws.
如需经常拆卸，建议不要用普通螺钉固定，而使用广告螺钉。
Since all communicating nodes can move with unlimited mobility, the topology of a mobile ad hoc network can change frequently.
移动自组网中的所有通讯节点均可移动，使得网络拓扑可能频繁发生变化。
The position based routing protocols are adaptable to the dynamic mobile Ad hoc networks due to not maintain explicit routing, and this is an advantage in the topology changing frequently MANET.
由于不必维护明确的路由，基于位置的路由协议即使在网络高度动态的情况下也具有很好的扩展性。
The position based routing protocols are adaptable to the dynamic mobile Ad hoc networks due to not maintain explicit routing, and this is an advantage in the topology changing frequently MANET.
由于不必维护明确的路由，基于位置的路由协议即使在网络高度动态的情况下也具有很好的扩展性。
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