但是一旦成功，回报是巨大的。

But when successful, the payoff is huge.

youdao

一旦成功登录，用户即可使用其日历。

Users can work with their calendars once they've logged in successfully.

youdao

一旦成功，用户将会登陆本项目所注册的网站。

Once logged in, users would have access to any website that has signed up for the program.

youdao

That matters for the company because if the plant works out to be a success, then the company will do well.

这对公司有影响,因为工厂一旦运转成功,业绩就会上升

耶鲁公开课 - 金融市场课程节选