免费是个好东西，特别是当你有闲胜于有钱时。

Free is good, especially if you have more time than money.

youdao

这一模式早期的一个例子是在线的电子邮件，你可以免费获得一定的存储空间，当你想要更多空间时，则需要付费。

An early example of this model was online email, where you got a certain amount of storage for free and had to pay for more (see more about this, though, in the section on when free is dangerous).

youdao

附送的小礼品可以是一些免费的小贴纸或者是糖果-当你的顾客在打开赠送的礼品，脸上露出微笑，这就对你的回馈。

Depending on the type of product, you could enclose some free stickers or some candy--a little bonus to put a smile on the customer's face when he or she opens your box.

youdao