4.(bulletproof)+ material防弹的
5.to go ballistic<非正式>(become angry)勃然大怒；暴跳如雷
The singer went ballistic after one member of his band failed to show for a sound check.由于一个乐队成员没来试音, 这位歌手勃然大怒。
(increase greatly)大增；激增
August registrations have gone ballistic, accounting now for a quarter of the annual total.8月份的注册数量突然大幅增加, 现占到了全年总数的四分之一。