When the speaker reached the most impassioned part, his voice cracked from the strain.
Tips
usage
Implies extreme effort and physical exhaustion of the voice — fans, mothers searching for children, protestors, impassioned speakers. Often slightly tragic or futile in tone.
memory
声嘶 (voice goes hoarse) + 力竭 (strength runs out): the body literally gives out from yelling. Pictures the moment your voice cracks and you can't shout anymore.
