尤其是，他们应该迫切地去推进其高瞻远嘱的沿河岸和沟壑重植本土树木的运动，在那些地方这块大陆哺育生命的表层土壤正在快速地流失。
In particular, they should be forced to accelerate her visionary campaign to replant indigenous trees along river Banks and ravines where the continent's life-giving top soil is being swept away.
如今研究者们正对避难区进行战略性地选择以填补陆地和海洋的沟壑。
Now researchers are making strategic picks for sheltered zones to fill in the gaps on land and in the sea.
澳大利亚的火山因侵蚀而风化，河流深深地穿过岩石的坡面，冲刷出令人惊叹称奇的沟壑和峡谷。
Australian volcanoes have eroded and rivers have cut deeply through long rocky cliffs, carving great gaps and canyons.
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