"mutter" in Chinese (Simplified)
嘀咕低声抱怨
Definition
小声而不清楚地说话，通常是在抱怨或自言自语。
Usage Notes (Chinese (Simplified))
口语。通常用于低声抱怨或不满时，和'whisper'不同，'mutter'带有不愉快或嘀咕的情绪，话语不清楚。
Examples
He muttered something under his breath.
他小声地**嘀咕**了几句。
Please don't mutter during the lesson.
请上课时不要**嘀咕**。
She muttered a quick apology.
她**嘀咕**了一句道歉。
He always mutters when he's annoyed at work.
他在工作不开心时总是**嘀咕**。
“Whatever,” she muttered, turning away.
“随便吧，”她**嘀咕**着转过身。
You could hear him muttering about the long lines the whole time.
你能一直听到他在**嘀咕**排队太长。