利弊得失的英文：
the advantages and disadvantages; the merits and demerits

advantages是什么意思：
n. 有利条件；有利因素；优势；益处；利益
v. 使处于有利地位；有利于；得益，获利

to the best advantage
效果最佳地|最出色地

Advantage server!
发球者占先！

Press one's advantage
利用有利形势[优势]进逼

disadvantages是什么意思：
n. 缺点；不利条件；损失

Every advantage has its disadvantage
有利必有弊

What are the advantages and disadvantages of competition?
竞争的优缺点是什么?

A disadvantage of the turbine is that it is not reversible.
涡轮机的一个缺点就是它不可以反转。

merits是什么意思：
n. 价值；长处，优点；功过
v. 值得，应受

The contention is without merit.
这一论点没有法律依据。

merit reward, praise, punishment, etc
应获得奖励、 称赞、 处罚等

Her singing is totally without merit.
她的演唱一无是处。