But China's strategy dovetailed geopolitics with economic necessity.是什么意思？

But China's strategy dovetailed geopolitics with economic necessity.

但中国的地缘政治策略是与经济用品紧密地联系的.

but

conj. 但是，而是，除了，只因为；prep. 除…以外；adv. 只，不过，只是，另一方面；n. 借口，推辞，但是，反对；pron. [关系代词，意义相当于 who…not, which…not]；vt. 对…说“但是”；

例句
English food can be wonderful but the normal English diet is abominable.
英国也有美食，只是一般的日常饮食太过糟糕。

strategy

n. 策略，战略，战略学；

例句
...his strategy for stopping the carnage in Kosovo.
他提出的制止科索沃大屠杀的策略

dovetailed

带鸠尾榫[槽]的；

例句
But China's strategy dovetailed geopolitics with economic necessity.
但中国的地缘政治策略是与经济用品紧密地联系的.

geopolitics

n. 地缘政治学；

例句
...the shifting geopolitics of the post-cold-war era have changed the thinking behind aid.
冷战之后地缘政治的变幻改变了人们对援助背后的思考。

with

prep. 和，跟，随着，关于，和…一致；

例句
A waiter entered with a tray...
侍者端着托盘进来了。

economic

adj. 经济的，经济学的，合算的，有经济效益的；

例句
He's already altered several of the proposals in his economic plan to accommodate demands of special interests.
他已经改动了经济计划中的几项提议以迁就特殊利益集团的要求。

necessity

n. 必要（性），（迫切）需要，必需品，自然规律；

例句
It would be the first time in human history that economic necessity has prevailed over military aggrandizement.
那应该是人类历史上首次经济需要高于军事扩张。