Tā de shēngdài shòusǔn le, zànshí bù néng shuōhuà.
His vocal cords are damaged; he temporarily can't speak.
Tips
usage
声带 has two meanings: (1) vocal cords/folds (anatomy), and (2) soundtrack of a movie. Context usually makes it clear. For movie soundtracks, 原声带 (original soundtrack) is more specific.
