失算的用法和樣例：
例句
-
我把雨傘留在家裡失算得很。
It is a big mistake to leave my umbrella at home. -
他為贏得其他大臣的支持而竭盡全力，卻因失算而徹底受挫。
He was completely outmanoeuvred in his campaign to win the support of other ministers. -
你失算了。
You are out in your calculation.
