Contingent gains
[經] 或有利得, 意外收益
?? 詞語組成解析
n. 收益；利益；腰槽；榫眼（gain的復數）
??? 情景例句
Richard says Max is twenty-one inches long. Richard
說Max是二十一英尺長。
A thousand friends are few, one enemy is too many.
朋友千人尚覺少，仇敵一人猶嫌多。
There is a boat in the river.
小河里有一條船。