形容词
中文翻译：Unknown
同义词：
['supplementary', 'supplementing']
例句：
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1.The teacher provided additional resources to help the students understand the material better.
老师提供了额外的资源来帮助学生更好地理解材料。
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2. The company offers a supplementary insurance plan for its employees.
公司为员工提供附加保险计划。
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3.The new policy is designed to supplement the existing one.
新政策旨在补充现有政策。