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1·Shifting cultivation is a common type of farming in many tropical countries.

轮作耕种是许多热带国家常见的农场经营方式。

2·As in most central African countries, Congo's deforestation is currently minor, caused largely by small-scale shifting cultivation and over-harvesting of wood for fuel.

在大部分中非国家，刚果的毁林属于少数，大部分是因为小型烧垦和过度采集树木作燃料导致。

3·Shifting from quantity orientation to quality orientation is the world trend for apple cultivation.

由数量型向质量型转变，是苹果栽培的世界性动向。