Coverage means that overallsupervision area should be covered by deploying all nodes within the network, in order to collect all information.
覆盖是指通过部署网络中的节点使其能够对整个监测区域实现有效地覆盖，实现信息采集的目的。
2
Protection level, insufficient protection, protection's unequal status and policy support smaller, the overallsupervision mechanism is not sound.
我国失业保险制度的保障水平不高，保障力度不够，保障地位不对等，政策支持较少，统筹监督机制不健全。
3
Responsible for overallsupervision, planning, control and coordination of all activities of personnel engaged in serving food and beverages in the Fine Dining Restaurant.