It tells you that you cannot get energy for free out of your force field.

就意味着你不可能在力场里面无偿地得到能量。

youdao

Buyers use different ruses to wring free credit out of their suppliers.

买主们想方设法从他们那些供应商那里获取无息赊购。

《柯林斯英汉双解大词典》

He walked out of jail a free man.

他获释出狱，成为自由人。

《牛津词典》

School administrators point out that the texts may be free online, but students need a way to access them.

VOA: special.2009.08.27

Alright, so it turns out there're two other useful types that you don't get for free out of the box.

我们还是回到这里，还有两种很有用的数据类型,这两种都不用担心内存不足。

哈佛公开课 - 计算机科学课程节选

In 2003, time was almost free out three months.

003年,三个月的时间几乎是不值钱的

耶鲁公开课 - 金融市场课程节选

Persuading more drivers to leave their car behind will require a shrewd mix of carrot and stick, such as high parking fees, free out-of-town parking and inner-city pedestrian areas.

ECONOMIST: The music of the metropolis

Travelers can sign out free bikes or check out the historic area on foot.

CNN: SHARE THIS

Sir Bruce also said cosmetic surgery deals, such as buy-one-get-one-free offers and handing out free breast surgery as prizes in raffles, were a "particularly distasteful" way of incentivising people to go under the knife.

BBC: 'Cosmetic crisis' waiting to happen