The concept is simple: users sign up for free, linking a credit or debit card to their account.

这项服务的理念很简单：用户免费注册后，将一张信用卡或借记卡与账户挂钩。

youdao

This writing class will serve you well. Go to the University writing Center and sign up for free tutoring.

这样的写作课将为你服务好去大学写作中心，报名免费辅导。

youdao

I also recommend you sign up for his free Humor Power Tips Ezine.

我也推荐你订阅他的免费《幽默能量技巧电子杂志》。

youdao

Go to Creative Money and sign up for free classes and more valuable money tips.

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Check out Creative Money and sign up for free classes and more valuable money tips.

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If you are a home delivery subscriber, go to homedelivery.nytimes.com to sign up for free access.

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