"mumbled" in Chinese (Simplified)
咕哝了嘀咕了
Definition
用低声或含糊不清的话语说话，让人难以听懂。
Usage Notes (Chinese (Simplified))
通常用于形容说话很小声、含糊或因紧张而不清楚，经常用于“含糊地回答”等短语。表达缺乏自信或不想让别人听见。和“低语”（小声但清楚）或“嘟囔”（带有不满情绪）不同。
Examples
He mumbled his name because he was shy.
他因为害羞，**咕哝了**自己的名字。
She mumbled something I didn’t catch.
她**咕哝了**几句，我没听清。
The boy mumbled his answer to the teacher.
男孩对老师**嘀咕了**答案。
“Sorry,” he mumbled, looking at his shoes.
“对不起”，他**咕哝了**着，看着自己的鞋。
She mumbled under her breath so no one would hear.
她**咕哝了**几句，没人能听见。
The speech was so quiet that he basically mumbled the whole time.
他的演讲声音很小，几乎全程都在**咕哝**。