His tactlessness showed that he had completely misread the situation.是什么意思？

His tactlessness showed that he had completely misread the situation.

他不能随机应变,这表明他对情势完全误解了.

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。

tactlessness

n. 粗鲁，笨拙；

例句
Mrs Hardie hurried to make up for her tactlessness by asking her guest about his holiday...
哈迪夫人赶紧问客人假期过得怎么样，替自己的言不得体打圆场。

showed

v. 给…看( show的过去式和过去分词 )，表现出，显露出，上演；

例句
He showed how the rich and powerful can abuse their position.
他让我们看到有钱有势的人是如何滥用其地位的。

that

det. 那个，那；pron. 那个，那；conj. 多么，如此…以至，用于某些动词、形容词和名词后，引出各种从句；adv. 不那么，那样；

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

he

pron. 他，它，一个人；n. 雄性动物；

例句
Logic had prevailed and he had abandoned the idea.
最终理智占了上风，他打消了那个念头。

had

v. 有（ have的过去式和过去分词 ），（亲属关系中）接受，拿，买到；

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

completely

adv. 完全地，完整地，完全，彻底，全部，一干二净，很，非常，充分，十分，万分；

例句
...a second career which absorbed her more completely than her acting ever had.
比演艺生涯更让她投入的又一职业

misread

vt. 读错，念错，对…判断错误；

例句
You couldn't be more mistaken, Alex. You've utterly misread the situation.
亚历克斯，你真是大错特错，你对局势的判断根本不对。

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

situation

n. （人的）情况，局面，形势，处境，位置，[心理学]情境；

例句
The foreign minister admitted he was still anxious about the situation in the country...
外交部长承认对于该国的局势他仍然颇感忧虑。