His speech is immature, his vocabulary limited.是什么意思？

His speech is immature, his vocabulary limited.

他说话很幼稚，使用的词汇有限。

his

pron. (he的所有格)他的，(he的物主代词)他的东西；det. 属于他的，用于名词前，自己的，指某人的，上帝的；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

speech

n. 演说，演讲，发言，说话，谈话，说话能力或方式，（乐器的）音，音色，方言，民族语言；

例句
The President declined to deliver the speech himself, on account of a sore throat...
总统因嗓子不适而婉拒了亲自讲话。

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。

immature

adj. 不成熟的，未完成的，粗糙的，幼小；

例句
The birds were in immature plumage...
这些鸟儿羽翅未全。

vocabulary

n. （某一语言的）词汇，（尤指外语教科书中附有释义的）词汇表；

例句
...the vocabulary that she employs.
她使用的词汇

limited

adj. 有限的，（君主权力）受宪法限制的，〈美〉乘客名额有限制的，（智力，能力等）有限的；n. 高级快车，直达的火车或汽车；

例句
Tickets are limited and will be allocated to those who apply first...
票数有限，先申请者先得。