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to float; to set afloat; to launch
to show on one's face (smile, sadness, etc.)
to recall; to call to mind; to imagine; to think of
水面に花びらを泛かべて写真を撮った。
I floated flower petals on the water and took a photo.
彼は穏やかな笑みを泛かべて答えた。
He answered with a gentle smile on his face.
涙を泛かべながら別れの言葉を告げた。
She said her parting words with tears welling up.