In the past if you lost a blank check all you needed to do was call your bank and put a block on the check number that you lost.

在过去，如果你丢了一张空白的支票，你所做的只是给银行打电话，并且屏蔽你丢失的支票号。

youdao

It's definitely an opportunity for help, but particularly, as an opportunity to work with someone for just a few moments to help get you unstuck or to get you past some stumbling block that, otherwise, if you struggled with on your own, you might sink or waste even multiple hours on just something that you're not seeing.

这是一个寻求帮助的机会，特别是，作为一个与某人一起工作的机会,他们能帮助你解决问题,或帮助你越过绊脚石，否则，如果你自己单独奋斗，你可能,浪费很多时间在,你不了解的东西上。

哈佛公开课 - 计算机科学课程节选