Policing of business courses varies widely.是什么意思？

Policing of business courses varies widely.

对商业行为的监管差别很大。

policing

v. （警察、军队等）巡查( police的现在分词 )，维护治安，（委员会等）监督，管制；

例句
Can I come back to the question of policing once again?...
我能再回到维护治安的问题上来吗？

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；

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

business

n. 商业，交易，生意，事务，业务，职业，行业；

例句
Many men still have difficulty accepting a woman as a business partner...
许多男性仍然无法接受女性商业伙伴。

courses

n. 课程，路线，前进( course的名词复数 )，进程，课程，方针；

例句
It is probably easier to make an analogy between the courses of the planets, and two trains travelling in the same direction.
将行星的运行比作两列火车朝同一方向行驶可能更容易些。

varies

v. 变化( vary的第三人称单数 )，[生物学]变异，相应变化，呈现不

例句
The approximate cost varies from around £150 to £250...
费用大概介于150至250英镑之间。

widely

adv. 广泛地，普遍地，到处，大量地；

例句
Gaviria had been widely expected to obtain well over half the votes cast.
人们普遍认为加维里亚能获得远远超过半数的选票。