- 1. The exact cause of cerebellar abiotrophy is not known, but it is thought to be due to an intrinsic metabolic defect.
- 该疾病确切地病因不明，但人们认为可能是内在代谢缺陷所造成的。
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- 2. Abiotrophy resulted from soil fertility inadequacy was a main limiting factor for the growth and development of apple trees in this region.
- 不施肥或施肥不足，则成为影响红富士幼树生长、发育和早实性的主要限制因子。
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- 3. Abiotrophy resulted from soil fertility inadequacy was a main limiting factor for the growth and development of apple trees in this region.
- 不施肥或施肥不足，则成为影响红富士幼树生长、发育和早实性的主要限制因子。
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