The third and most fundamental feature of Old English is its grammar.

古英语第三个也是最基本的特征是它的语法。

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The fundamental feature of academic journals lies in their academic features.

学术期刊的根本特色在于它的学术特色。

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The fundamental feature of this stage is equal conversation between heterogeneity cultures.

这一阶段的根本特征是异质文化之间的平等对话。

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This fundamental feature of the corporate tax law is what drives much of the discussion for how businesses are sold.

FORBES: Selling Your Business? Taxes Are Key

On a fundamental level, the filmed lessons feature a class of Uruguayan students with social characteristics mirroring those of the target groups of learners.

UNESCO: Country Profile: Uruguay

But the act of shopping, by which I mean individuals making price-feature-value tradeoffs for the products and services they are considering purchasing, is absolutely fundamental to a healthy economy.

FORBES: The Road Not Taken: Free Market Health Care