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to float; to be suspended
to rise to the surface; to appear; to emerge; to show up; to loom (up)
to come to mind; to have inspiration
雲が空に浮んでゆっくり流れていく。
Clouds float in the sky and slowly drift by.
彼女の顔に安堵の表情が浮んでいた。
A look of relief appeared on her face.
良いアイデアが突然頭に浮んできた。
A good idea suddenly came to my mind.