由于WLAN工作站之间的模糊边界，wlan链路层拥有在传送前清除一个区域的协议。
Because of fuzzy boundaries between WLAN stations, the WLAN link layer has a protocol to clear out an area before transmission.
此外，双边和区域协议中还会出现复杂的情况。
Then there is the complexity of the growing number of bilateral and regional deals.
该地区是世界上人迹罕至的区域之一，按照协议，两国不在部分边境巡逻。
The area is one of the least accessed area in the world and by agreement the two countries do not patrol that part of the border.
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