In other nations a mix of factors has constrained growth .

在其他国家，多重因素限制了经济增长。

Luckily , researchers aren 't so constrained .

幸运的是，研究者们不受这些约束。

American monetary policy may be constrained .

美国的货币政策可能会因此受到限制。

It now routes searches coming from the mainland through less constrained hong kong .

现在谷歌搜索的节点自大陆来到了限制较少的香港。

And although police are constrained by national borders , criminals roam freely .

虽然警察部门有国界限制，但是罪犯却能逍遥畅游全球。