making a noise like that of a tight string being quickly pulled and released

The song was accompanied by a twangy Western guitar. 这首歌的伴奏是一把拨弦西部吉他。

used about a way of speaking that is typical of a particular person or area, often involving air passing out through the nose, which gives a particular quality to the voice

At that time, the factory workers in Atlanta were country people who'd come to town with twangy rural Georgia accents. 那时，亚特兰大的工厂工人都是乡下人，他们操着带鼻音的佐治亚乡下口音来到城里。