Definition
This idiom is used to describe a situation where one person's misfortune or loss becomes another person's advantage or gain.
一人失意，一人得志
One company's failure can be a great opportunity for another, showing that one man's loss is another man's gain.
一家公司的失敗可能是另一家公司的好機會，這正顯示了一人的損失是另一人的獲利。
When a competitor exits the market, it's often the case that one man's loss is another man's gain for the remaining companies.
當一個競爭者退出市場時，通常對剩下的公司來說，一人的損失是另一人的獲利。
He was lucky to get the job after another candidate was disqualified, proving that one man's loss is another man's gain.
他在另一位候選人被取消資格後幸運地得到了這份工作，證明了一人的損失是另一人的獲利。