海量資源,盡在掌握
 Definition:A body fossil is what was actual organic material from a creature or plant(like abone).實體化石shí tǐ huà shí泛指由生物遺體本身保存下來而形成的化石,大多是生物的硬體部分,原有物質(zhì)成分一般已被替換或填充。Example:Apart from the spectacular t......(本文共 291 字) [閱讀本文] >>