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Results:
on-off : 1）オンオフの
on-hook : 1）オンフック
onco : 1）《接頭》腫瘍
on-load : 1）オンロード
on-line : 1）オンライン式の、データ処理でコンピュータ直結方式の
on top : 1）上の方に=above
one's : 1）その人の、人の
one of ~ : 1）のひとつ
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