He gives ice-cream to kids for free.

他免费给孩子们冰淇淋。

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Children lining up for free food.

孩子们排队领取免费食物。

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She taught them for free.

她免费教他们。

youdao

His idea started when he heard two religious workers playing music for free in New York City's underground transportation system.

VOA: special.2009.07.31

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

they even have days that you can get in for free for family revisiting and you can go in.

如果你是举家再访，有时候你甚至能免费进去。

蒂姆伯顿最棒 - SpeakingMax英语口语达人

The view of the mountain peaks poking out from the sea comes for free.

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Children aged four to nine, meanwhile, travel for half-price and the under-threes ride for free.

BBC: Travel with children: The night train to Luxor

Divers and snorkelers can become members of REEF (for free) and enter their own fish survey observations online.

BBC: Underwater volunteer vacations