toggle menu
Categories
Discussions
Sign In
·
Register
Sign In
·
Register
Categories
Discussions
Activity
Sign In
·
Register
×
Home
›
alex-butler_60c232d14407e
›
Comments
alex-butler_60c232d14407e
alex-butler_60c232d14407e
About
Username
alex-butler_60c232d14407e
Joined
June 2021
Visits
0
Last Active
June 2021
Roles
Member
Activity
Discussions
Comments
Comments
有，而且濃度比現今的氧氣濃度還高
in
:請問地球古代是沒有氧氣的嗎？7pk999.com?
Comment by
alex-butler_60c232d14407e
June 2021
