His only weakness is his temperament.是什么意思？

His only weakness is his temperament.

他唯一的缺点就是他那脾气。

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。

only

adj. 唯一的，仅有的，最好的，最适当的；adv. 只，仅仅，结果却，不料；conj. 但是，可是，要不是；

例句
Outsiders who wed islanders are given only three years' right of abode at first.
岛外的人和岛民结婚之初只能获得三年的居住权。

weakness

n. 弱点，缺点，软弱，优柔寡断，弱，衰弱，虚弱，〈口〉偏爱，癖好；

例句
The Treasury had been blaming the pound's weakness on the backwash from the falling dollar.
财政部一直将英镑的疲软归咎于美元贬值。

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。

temperament

n. 性格，（人或动物的）气质，易冲动，（性情）暴躁；

例句
Her mental capacity and temperament are as remarkable as his.
她的才智和气质和他一样出众。