They do a third-rate job very expensively.是什么意思？

They do a third-rate job very expensively.

他们收很多钱交出了三流的活儿。

they

pron. 他/她/它们，人们，大家，政府，当局，她们；

例句
The storms had abated by the time they rounded Cape Horn.
他们绕过合恩角时，暴风雨已经减弱。

do

aux. 构成疑问句和否定句，代替动词，用于加强语气；vt. 做，干，进行，从事；vi. 表现，进展，引起，行过；n. 社交聚会，社交活动，宴会；

例句
Rachel was going to do something about Jacob...
蕾切尔将对雅各布有所行动。

job

n. （一件）工作，职责，职业，（作为一个单元处理的）作业；vt. 承包，代客买卖；vi. 做零工，作包工，打杂；

例句
...the sharp acceleration in job losses.
失业的急速增加

very

adj. 很，非常，恰好是，正是，十足的，特有的；adv. 很，非常，充分，完全；

例句
Most people have very little difficulty in seeing why a Van Gogh is a work of genius.
多数人不难理解为什么凡·高的作品是天才之作。

expensively

adv. 昂贵地，高价地；

例句
She was expensively dressed, with fine furs and jewels.
她穿戴着名贵的毛皮大衣和珠宝，非常奢华。