But increased patrols on these routes made them unviable .

但这些航线巡逻的增加，使他们无法偷渡成功。

There will be no more routine american patrols , rare though they have already become .

不会再有美军日常巡查，即使现在巡查也变得很少了。

A security guard patrols the beach in cancun .

一名保安在坎昆的海滩巡逻。

It is building a park headquarters and setting up anti-poaching patrols .

他们正在建造公园指挥部，组建反盗猎巡逻队。

Earlier vietnam stated that it was conducting regular air patrols over the spratlys .

早先，越南也声明称将在南沙群岛定期进行空中巡逻。