宇宙創生を開始した。

1 ：Nanashi_et_al.：2019/02/20(水) 05:33:13.10 ID:C6hxU/ap0

神様は、僕に必ず辿り着く。

2 ：Nanashi_et_al.：2019/02/20(水) 05:33:37.94 ID:C6hxU/ap0

ハーバード大学主席。

3 ：Nanashi_et_al.：2019/03/15(金) 11:45:22.93 ID:aZiitRAyt

It is also a common starting point for bismuth chemistry.
It is found naturally as the mineral bismite (monoclinic) and sphaerobismoite (tetragonal, much more rare),
but it is usually obtained as a by-product of the smelting of copper and lead ores.
Bismuth trioxide is commonly used to produce the "Dragon's eggs" effect in fireworks, as a replacement of red lead.