what's gravity then? we need call that Nobel brother for the answer.

what's gravity then? we need call that Nobel brother for the answer.

所有跟贴·加跟贴·新语丝读书论坛

送交者: whoami 于 2016-02-24, 12:32:07:

回答: it is gravity in the world of magnet :) 由 silxirt 于 2016-02-24, 11:17:12:

it is magnet in the world of gravity :-) (无内容) - silxirt (0 bytes) 2016-02-24, 13:20:03 (801878)