We use cookies to understand how you use our site and to improve your experience. This includes personalizing content and advertising. By continuing to use our site, you accept our use of Cookies, Privacy Policy Term of use.
Video Player is loading.
Current Time 0:00
Duration -:-
Loaded: 0%
Stream Type LIVE
Remaining Time 0:00
28 views • September 2, 2021


美國大峽谷(Grand Canyon)記錄著地球近20億年來地質變遷的歷史,但其中有一段長達10億年的時期在這些層積岩內完全找不到蹤跡。一份新研究提出可能的解釋。 發佈日期:2021年9月3日 責任編輯:Rm
Show All
Comment 0