Whole foods are always the best option rather than adding supplements.
天然食品总是最好的选择，而不是添加补充剂。
But adding new language features to an existing language always has a cost.
但是向现有语言添加一项新的语言功能总是需要付出一定的成本。
But adding new language features to an existing language always has a cost.
但是向现有语言添加一项新的语言功能总是需要付出一定的成本。
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