(corporate finance) the amount, expressed as a percentage, that is earned on a company's total capital calculated by dividing the total capital into earnings before interest, taxes, or dividends are paid
ROI的用法和樣例：
例句
Roy jumped the gun and started building an extension to his house before be had planning permission, and now he's furious because the local council have made him pull it all down. 羅伊在沒有得到規劃許可前過於匆忙地擴大了住宅建築的範圍，現在他大發雷霆，因為地方委員會要他拆掉。
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