形容词
中文翻译：Unknown
同义词：
['slow', 'sluggish', 'delayed例句：1. The child was retarded in his development.（这个孩子在发展中迟缓。）']
例句：
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1. The child was retarded in his development.
这个孩子在发展中迟缓。
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2.The team's performance was retarded by the lack of practice.
团队的表现因缺乏练习而迟缓。
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3. The project was delayed due to unexpected issues.
由于意外问题，项目被推迟了。