* set aside

留着

set aside some money for one's retirement

为退休而存些钱

Please put this jumper aside (ie reserve it) for me.

请给我留着这件毛衣。

* downside

n.〔某事物的〕不足之处，负面，缺点

Digital cell phones offer more security, but the downside is that they have less power.

数码手机提供了更好的安全性，但其不足之处在于功率不大。

* upside

n.〔不利局面中〕好的一面，积极面

The upside of the whole thing is that we got a free trip to Jamaica.

整个事情的好处是我们免费去了一趟牙买加。