be worth的用法和樣例：
例句
- An emerald of that size, unflawed, would be worth a king's ransom.
一塊那麼大、而又無瑕疵的綠寶石會是價值連城的。 - That painting must be worth a king's ransom.
那幅畫一定價值連城。 - If anyone grasses on us, his life won't be worth living!
誰要是出賣我們，他就別想活了！ - Sufficiently valuable or important to be worth one's time, effort, or interest.
值得的非常有用的或重要的而值得耗費時間、投入力量或引發興趣的
