可以用以下说法:
rich soil
fertile soil
fertileground
fertile territories
例句:
它们生长时喜欢肥沃土壤和水分,但不喜打扰。
They enjoy rich soil and moisture when growing, but dislike disturbance.
语言自身播下变化的种子,而社会环境赋予它成长和传播的肥沃土壤。
Language sows its own seeds of change; social context gives it the fertile ground to grow and spread.
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