also freewheeling, 1903, from free wheel (1899, see free (adj.) + wheel (n.)); a bicycle wheel that turns even when not being pedaled, later from the name of a kind of automobile drive system that allowed cars to coast without being slowed by the engine. Figurative sense is from 1911.
权威例句
1. I wasn't expecting you to do it for free.
我并没有指望你白干。
2. You get a big salary incentive and free board and lodging too.
你们能获得大笔激励性薪水,还可享受免费膳宿。
3. The shark was writhing around wildly, trying to get free.
鲨鱼拼命挣扎,试图逃脱。
4. What I did for you was free, gratis, you understand?