These rookie cops don’t know anything yet.是什么意思？

These rookie cops don’t know anything yet.

这些新警察什么都还不懂。

these

adj. 这些的；pron. 这些；

例句
There's lots of money about these days for schemes like this.
近来这类计划资金充足。

rookie

n. 新手，新队员；

例句
I don't want to have another rookie to train.
我不想再训练新兵了。

cops

n. 堆，顶，警察( cop的名词复数 )；

例句
The team police get to know the people in their patrol areas better than cops who must cover a larger beat.
小分队的警察比那些负责大片区域的警察更了解自己管片的群众。

know

v. 知道，了解，认识，确信；n. 知情；

例句
I know you're above me socially, but I must say I find your attitude offensive...
我明白你的社会地位比我高，但我得说我觉得你的态度很粗鲁。

anything

pron. 任何东西，（用于否定句、疑问句中以及 if 或 whether 和 prevent、ban、avoid 等动词后，代替 something）任何东西，重要东西，重要事物；

例句
He said he'd ask Nina for a divorce, but he never did anything about it.
他说会跟尼娜提出离婚，可是他却从未付诸实际。

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。