I am still not fully persuaded of the plan's merits.

我还不能完全信服这个计划的优点。

They weighed up the relative merits of the four candidates.

他们对四名候选人各自的优点作了比较。

They chatted about the relative merits of London and Paris as places to live.

他们闲聊伦敦与巴黎作为居住地各自相对的优点。

Everybody has his own merits and demerits. One should never think that he is perfect while others are all good for nothing.

每个人都有自己的优点和缺点，不要把别人都看成百无一是，把自己看成十全十美。

I am ready to judge any book on its merits.

我会根据每本书自身的性质来对其进行评判。