natural barrier

基本解释

And Vietnam has invested in mangrove restoration to rebuild a natural barrier to protect coastlines from flooding.
另外，越南正投資重建紅樹林，這道自然屏障能在澇災中保護海岸線。
But conservation efforts in this unique eco-system – which serves as a natural barrier to future cyclones - are inadequate.
但是對這裡唯一的生態系統——那些阻擋未來風暴的天然屏障——的保護措施卻收傚甚微。
With that 5, 000-metre natural barrier behind us, we were steering steeply down towards Sost, Pakistan's most northerly town.
背後是海拔5000米的自然屏障，我們沿著陡峭的山路下坡前往Sost，這是巴基斯坦最北耑的市鎮。

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They built only on high ground, mostly left the river to its own devices, and relied on the wetlands as a natural barrier to buffer and deplete any incoming hurricanes.
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