cost-free的用法和樣例：
例句
用作形容詞 (adj.)
- Anything free is worth what you pay for it.
任何免費的東西與你所付出之物等值。 - Free operating systems could not be installed.
免費的操作系統不能被安裝。
用作副詞 (adv.)
- This ticket can entitle you to have a free meal in this hotel.
這張票可以讓你在這個(gè)旅館免費地吃一頓飯。
詞匯搭配
- cost free 免費
- free of cost 免費(奉送)
