사전 계획이나 강요 없이 즉흥적으로 일어나는 방식으로.
In a way that is natural, often sudden, and not planned or forced.
예문:
"The crowd spontaneously began to hum the melody."
"She spontaneously hugged her friend after hearing the good news."
누가 시키지 않아도 자신의 의지에 따라 자발적으로.
Without being asked or forced; of one's own free will.
예문:
"He spontaneously volunteered to lead the charity auction."
"The community spontaneously organized a vigil for the victims."
외부의 자극이나 원인 없이 자연적으로 발생하는 상태로.
Without apparent external cause, stimulus, or human intervention.
예문:
"Certain isotopes decay spontaneously over time."
"The forest fire was thought to have started spontaneously due to extreme heat."