Forest rangers can drop the sensors from aeroplanes to detect fires, showing their exact location and how fast and in what direction they are spreading.

护林员可以从飞机上扔下传感器来探测火情——准确的方位和扩散的速度、方向。

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Forest rangers take down the DAMS, and the beavers rebuild them.

森林守护人员拆除了坝堤，而海狸们又把坝堤恢复起来。

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But the local Udege people and the forest rangers say the area is inaccessible to both loggers and poachers.

BBC: Last stand for Russia's tigers

The firm says the road will let fire-fighting vehicles into the forest and allow rangers to protect the tigers.

BBC: Last stand for Russia's tigers

Forest rangers are provided the tools of the trade to perform their jobs better.

FORBES: Hemendra Kothari's Quest To Save India's Tigers