supernumerary
柯林斯词典
1. ADJ exceeding a regular or proper number; extra 额外的
2. N a person or thing that exceeds the normal, required, or regular number 定额以外的人
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1. ADJ exceeding a regular or proper number; extra 额外的
2. N a person or thing that exceeds the normal, required, or regular number 定额以外的人