英语高手看这长难句,定语后置修饰谁的问题
TrackingwhalesisbutoneexampleofanexcitingnewworldjustopeningtocivilianscientistafterthecoldwarastheNavystartstoshareandpartlyuncoveritsglobalnetworkofunderwaterlisteningsystembuiltoverthedecadestotracktheshipsofpotentialenemies.
该句子划分结构为:
Trackingwhalesisbutoneexample(ofanexcitingnewworld)(justopeningtocivilianscientistafterthecoldwarastheNavystartstoshareandpartlyuncoveritsglobalnetwork{ofunderwaterlisteningsystem}{builtoverthedecadestotracktheshipsofpotentialenemies.})
我的问题是,这个长难句后面的built为什么修饰的是itsglobalnetwork而不是underwaterlisteningsystem