spontaneous origin

• 自然发生

spontaneous origin的用法和样例：

例句

1. The scarab beetle was the symbol of Spontaneous Generation, New Life, and Resurrection.
   圣甲虫是新生命和复活自然发生的符号。
2. The caption must not mislead the reader into believing these images are spontaneous.
   对此，图片说明必须解释现场情况，避免误导读者以为画面中是自然发生的场景。