如何解释"die out"in English

如何解释die outin English To live in hearts we leave behind in not to die.or:To live in hearts we leave behind in never to die.如何解释其语法成分? Much pollution makes many birds in that area______.A die out.B die of die out 和dying out die out,die of,die from,die for的区别 die out=什么? die out 甚么意思, die out中文含义 die out 是什么意思啊? die out 怎样造句? 以 die out 造句 die in和die of without water the fish in the river would die out是神什么句式 without water the fish in the river would die out是神什么句式 die out的中文意思 lend die out dying意思 die out of如何理解呢?It had quite died out of knowledge.它早已成了陈迹. 翻译 解释The statistics of Massachusetts showed that not one rich man's son out of seventeen ever die rich.