Education can counteract the natural tendency to do the wrong thing, but the inexorable succession of generations requires that the basis for this knowledge be constantly refreshed.
教育可以对衡做错事的自然倾向，但必须持续才可以对抗一代传一代的无情力。
Afforestation The establishment of forest on land not previously forested, either by natural succession or by planting.
裸地造林（荒山造林）：以自然生成或者种植的方式在以前没有森林的陆地上建造森林的过程。
It is a useful practical technology for direct seeding in vegetation restoration, while method of natural succession can not be used.
直播造林在石质山地植被恢复中具有明显效果，自然演替恢复效果较差。
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