s. deep and harsh sounding as if from shouting or illness or emotion
a. 粗哑的, 粗鲁的, 粗率的, 板着脸孔的
1. The old man had a gruff voice, but he was very kind.
老人声音粗哑，但他非常和善。
2. She asked the gruff teacher for help with her homework.
她向那位粗暴的老师寻求家庭作业的帮助。
3. Despite his gruff appearance, he was a gentle giant.
尽管他外表粗犷，但他是个温柔的巨人。