我只能靠小费和免费餐食勉强度日。

It's only with tips and free meals that I manage to get by.

youdao

有些花只能靠蜂鸟授粉。

There are some flowers that can only be pollinated by the humming birds.

youdao

他只能靠一副拐杖走路。

He can walk only with the assistance of crutches.

《牛津词典》

They will try to control cost. You have to be on your own.

因此他们会控制成本，到那时，就只能靠自己了。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选

As a matter of fact,if things were perfectly efficiently priced, there wouldn't be any opportunity to generate excess returns and if you make active bets--if you make bets against the market -then whether you win or lose has to do with luck.

事实上,如果资产都是有效定价的,那么根本不可能获得任何超额收益,如果你主动一搏,要从市场中获利,那么无论得失都只能靠运气了

耶鲁公开课 - 金融市场课程节选