1anger grow over japan across china第一句over如何解释呢?across是遍布吗?a

1anger grow over japan across china第一句over如何解释呢?across是遍布吗?across不是穿过吗?
2smoke still rose up from the warm ground over the desolate hills
烟依旧从发热的地面上升,弥漫在荒凉的山丘上,我不太清除over the desolate hills修饰的是smoke还是warm ground?
我对这种介词短语修饰什么不太懂唉