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a considerable number; a fair number
相当数の製品が不良品だった。
A considerable number of products were defective.
調査で反対に回った住民は相当数に上った。
The number of residents who opposed the plan reached a considerable figure in the survey.
報告書によると、相当数の学生が卒業に至らなかった。
According to the report, a considerable number of students did not graduate.