形容词
中文翻译：专门的
同义词：
['professional', 'specialized例句：1. The engineer specializes in designing aircraft.（这位工程师专门从事飞机设计。）']
例句：
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1. The engineer specializes in designing aircraft.
这位工程师专门从事飞机设计。
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2.He is a specialist in his field of expertise.
他在其专业领域内是一位专家。
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3.The team consists of specialists in various fields.
该团队由各领域的专家组成。