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to burst open; to split open; to pop
to be bursting with (e.g. youth, laughter, flavor)
to bounce; to bound
豆が火で弾けた音がした。
I heard the sound of beans popping in the fire.
子供の笑顔が弾けている。
The child's smile is bursting with joy.
子供たちの笑い声が弾けるように響いた。
The children's laughter rang out as if bursting.