形容词
中文翻译：Unknown
同义词：
['utility', 'useful', 'functional']
例句：
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1. This tool is designed for functional purposes only.
这款工具仅用于功能性目的。
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2. The new software has been designed to be highly functional.
这款新软件被设计得非常实用。
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3. The furniture is functional and easy to clean.
家具既实用又易于清洁。