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I got this cell phone for free with a 2-year contract.
签了两年合同，我就免费得到了这手机。
Buy one get one free.买一送一
All jeans are buy one get one free today.
今天所有牛仔裤都买一送一。
Free-for-all蜂拥,大混战,大声喧哗
There was a sale at the store so many people swarmed in when it opwned,It was a massive free-for-all!
商店有个大减价,开门时许多人一窝蜂的涌进去,完全是大混战.
On the house老板卖单,完全免费
Today's your birthday? Desert is on the house!
今天是你的生日吗?我们送你个甜点.
No such thing as a free lunch世界上没有免费的午餐
I don't think he's giving us money without an ulterior motive,There's no such thing as a free lunch.
我不相信他会那么好心的给我们钱，天下可没有免费的午餐(别有用心…)
Freeload白吃白喝,占便宜
In America even if you live with your relatives,You cannot be a freeloader.
在美国，即使你跟亲人住，也不能白吃白喝。
Vocabulary:
free stuff免费的东西
free-for-all蜂拥,大混战,大声喧哗
swarmed/n.一大群
massive/a.巨大的,大量的
on the house老板卖单
No such thing as a free lunch.世界上没有免费的午餐
ulterior/a.隐秘的
freeload/v.吃白食
