unassignable costs的用法和樣例：
例句
- It was originally introduced by registries so that registrars could avoid costs if a domain name was mistyped or misspelled during the registration process.
它本來是所提出的登記冊，使官可避免成本，如果一個域名被拼寫錯誤或拼寫錯誤在註冊過程中。 - The commission didn't raise retail prices, keeping the higher costs from hitting consumers and business but pressuring grid operators in the middle.
發改委沒有上調零售電價，避免成本上升直接給消費者和企業帶來衝擊，但此舉卻加重了中間電網運營商的壓力。
