If you earn more, you pay more in tax, so it's all swings and roundabouts.

赚的越多，缴的税也越多，所以有得必有失。

《牛津词典》

The firm will not produce its first prototype until 2009, but sceptics already worry that what it gains on the swings, it will lose on the roundabouts—or, in this case, on the turbines.

这家公司将于2009年生产出其原型产品，但怀疑论者已开始担忧这将是“收之桑榆，失之东隅（更确切的说是汽轮机）”。

youdao

European companies are also grappling with the iron law of currency movements: that what you gain on the swings you lose on the roundabouts.

欧洲企业还要应对货币走势的铁律：有所得也可能有所失。

youdao