名词
中文翻译：谷物边界
同义词：
['boundary', 'limit', 'line例句：1. The grain boundary between the two countries is a point of contention.（两国之间的谷粒边界是争议的焦点。）']
例句：
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1. The grain boundary between the two countries is a point of contention.
两国之间的谷粒边界是争议的焦点。
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2.The scientist found a grain boundary in the soil that could explain the phenomenon.
科学家在土壤中发现了一个谷粒界限，可以解释这一现象。
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3. The grain boundary is crucial for understanding the genetic diversity within a species.
谷粒界限对于理解物种内的遗传多样性至关重要。