Spontaneously

来自Big Physics

google

ref

mid 17th century: from late Latin spontaneus (from ( sua) sponte ‘of (one's) own accord’) + -ous.


文件:Ety img spontaneously.png

wiktionary

ref 

spontaneous +‎  -ly
取自“https://www.bigphysics.org/index.php?title=Spontaneously&oldid=31545”