hemming and hawing是什么意思???急!!

吞吞吐吐

hemming and hawing

支支吾吾，默默唧唧半天，

hemming and hawing
To stop, in speaking, with a sound like haw; to speak with interruption and hesitation.
Cut it short; don't prose -- don't hum and haw.
hemming and hawing speaking hesitantly and inarticulately,with numerous pauses and interjections.