Yet its potential is largely vitiated by Brown's carelessness and inexperience.是什么意思？

Yet its potential is largely vitiated by Brown's carelessness and inexperience.

此外,布朗的粗心大意和经验不足极大地损害了小说的潜力.

yet

adv. 但是，还，已经，又，再；conj. 然而，但是；

例句
She had not yet become accustomed to the fact that she was a rich woman.
她还不太适应已经是一个富婆的事实。

its

pron. (it的所有格形式)它的，厥；

例句
The government is to accelerate its privatisation programme.
政府将加快其私有化计划的进程。

potential

adj. 潜在的，有可能的，[语法学]可能语气的，表示可能性的，有能力的；n. 潜力，潜能，[物]电位，势能，潜能的事物，[语]可能语气；

例句
Talbot was presented with 80 potential avenues of investigation...
给塔尔博特提出了80种进行调查的可能途径。

is

vt.& vi. 是（be的三单形式；n. 存在；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

largely

adv. 大部分地，主要地，大规模地，丰富地；

例句
...a research programme that has largely failed to achieve its principal aims.
在较大程度上未能实现其主要目标的研究项目

vitiated

v. （使）削弱( vitiate的过去式和过去分词 )，（使）破坏，（使）损害，（使）无效；

例句
Strategic policy during the War was vitiated because of a sharp division between 'easterners' and 'westerners'...
由于“东方人”和“西方人”之间存在巨大的分歧，战争期间的战略方针没有得到切实的执行。

by

prep. 在…旁边，表示方式，由于，经过；adv. 经过，表示保留或保存时用，短暂拜访；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品

carelessness

n. 粗心大意，草率，快活，淡漠；

例句
The error was due to carelessness pure and simple.
这个差错完全是由于粗心造成的.

and

conj. 和，与，而且，于是，然后，因此；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

inexperience

n. 缺乏经验，不成熟，缺乏知识；

例句
Critics attacked the youth and inexperience of his staff.
批评家们抨击他的员工年纪太轻，缺乏经验。