例句：
自1976年以来，激烈的内战几乎持续不断。
The civil war has raged almost continuously since 1976.
持续不断的暴力事件使人们对它的反应减弱了。
The constant repetition of violence has blunted the human response to it.
1990年全年，敌对组织互相残杀的民族悲剧持续不断。
The national tragedy of rival groups killing each other continued throughout 1990.