In my opinion it is a very useful formula, which explains that gain is equal to return. We can learn a lot from this.

在我看来这是一个很有用的公式，可以得出付出是等于回报的，我们从中可以得到很多的信息。

youdao

According to reciprocal altruism, evolution favors organisms that sacrifice their good for others in order to gain a favor in return.

根据互利主义理论，进化有利于为其他有机体舍弃利益以获得好感的有机体。

youdao

The first quarter of 2010 is unlikely to show as big an output gain, suggesting that the pace of improvement in employment may be slowing, even as regular job growth has yet to return.

2010年一季度，GDP增速不可能象以前那样大，这表明：就业市场的改善也将放缓，尽管正常的就业机会仍将增长。

youdao

There have been previous calls for players from the two countries to gain extra cash in return for increased demands on their time on international duty.

BBC: Scots & Irish stars could go pro

Some restaurants, like the Ning Po Residents Association, require a nominal annual fee (around 200 Hong Kong dollars), but in return you gain access to excellent food (in this case, recipes from the city of Ningbo, near Shanghai, such as delicate, juicy soup dumplings and sweet-and-sour fish), in an exclusive but usually unpretentious setting.

BBC: Hong Kong��s secret nightlife spots

In return, the legislature would gain the right to dismiss a government with a no-confidence vote.

ECONOMIST: Taiwan