·2,447,543篇论文数据，部分数据来源于NoteExpress
Many that remain are poorly preserved because the probability of destructive deformation or metamorphism increases with age.
由于变形或变质作用随时间增加概率大大增加，许多现存的遗迹状况欠佳。
youdao
应用推荐
模块上移
模块下移
不移动