英语翻译At least three explosions rocked Tripoli late Tuesday ni

At least three explosions rocked Tripoli late Tuesday night; it was not immediately clear what they hit.
试着解释一下本句：上周二午夜至少有三次爆炸把的黎波里震得地动山摇,爆炸袭击的是何目标一时半会儿尚未明朗.
1. 这个句子里面的rocked是震动的意思,在这里怎么翻译啊,
基本是这个意思.rock（动词）是个比喻,试译：使的黎波里地动山摇.值得借鉴.
2. it was not immediately clear what they hit怎么理解啊,是他们没有立即清除他们想要的目标吗,
试译：爆炸袭击的是何目标一时半会儿尚未明朗.be clear是“系表结构”,含义“清楚”.
仅供参考,有高手更好地理解了本句,请联系我,以便我更加进步.谢谢.