这些防护林带有效地保护了农田，使之免受流沙侵袭。

These tree belts effectively protect the farmland against shifting sand.

youdao

这些防护林带保护了50万英亩农田不受流沙侵袭。

These tree belts protected 500,000 acres of farmland against shifting sand.

youdao

这些防护林带保护了50万英亩农田不受流沙侵袭。

These tree belts protected 500,000 acres of farmland against shifting sand.

youdao