“background extinction”的概念、定义、翻译、参考文献-科学参考

单词	background extinction
释义	background extinction Encyclopedia 理学古生态学释 background extinction背景灭绝生物在其自身演化发展过程中，正常条件下发生的灭绝。又称正常灭绝。理学背景灭绝释 background extinction；normal extinction背景灭绝地质历程中生物由于自身的原因在正常环境状况下的完全灭亡的现象。又称正常灭绝。
随便看	Song Shijie Song shipwreck at Yuanmengkou of Tianjin Jinghai Song Shixiong Song Shu Song Shuhe Song Shuhua Song Shuxian Songsigong Played Havoc with Zhang Who Is A Miser song-singing or songgirl at a feast Songs in Mountains Songs of a Pacified Age for the Inner Halls Songs of Baishi Taoist songs of ceremony or ritual songs of current affairs Songs of Experience Songs of Fufeng Songs of Innocence Songs of King Langya Songs of Longtou Songs of the South Songs of Wang Mingjun Songs of Yao Minority from Distant Mountains Song State Song Sui Song Tao

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