grumbling

• 形容低沉的、连续的隆隆声，也指人低声或不停地抱怨。

Describes a low, continuous, rumbling sound, or a person who is complaining in a quiet or persistent manner.

1. Continuous low-pitched soundB2formal

   Describing a sound that is continuous, full, and low-pitched, often like a deep rumble or throb.

   持续低沉的声响

   • The grumbling engine of the old truck could be heard from a mile away.
   • A grumbling noise came from the volcano before the eruption.
   • The grumbling thunder warned of the approaching storm.

   同义词droninghummingrumbling

• 名词，指低沉而持续的声音，或低声表达不满、抱怨。

A noun referring to a low, continuous rumbling sound or a subdued expression of discontent or complaint.

1. Low continuous noiseB2formal

   A loud, low, and dull sound that continues without interruption.

   隆隆声

   • The grumbling of the distant thunder kept us awake.
   • We could hear the grumbling of the old engine from inside the house.
   • The grumbling of the volcano warned of an imminent eruption.

   同义词dronehummurmurmurmuringrumblerumbling

2. Muffled complaintB1informal

   A complaint expressed in a low, unclear, or indistinct tone, often showing dissatisfaction.

   嘟囔

   • There was a lot of grumbling among the employees about the new policy.
   • His constant grumbling about the food annoyed everyone at the table.
   • The students' grumbling could be heard as the teacher assigned more homework.

   同义词mumblingmurmurmutter

   反义词acclaimapprovalcommendationpraise

• 动词，表示以低沉不满的语气抱怨或嘟囔，也可指发出低沉的隆隆声。

A verb used to express the act of complaining or murmuring in a low, discontented manner.

1. Complain quietlyB1informal

   To complain or express dissatisfaction in a low, often grumpy voice.

   低声抱怨

   • He grumbled about the long wait at the doctor's office.
   • She grumbled under her breath when asked to work late.
   • The customers grumbled about the poor service.

   同义词carpcomplaingrousegruntkvetchmoanmurmurmutterwhine

   反义词applaudcheercomplimentpraise

2. Make a low rumbling soundB2formal

   To make a low, continuous, rumbling noise, like thunder or a stomach.

   隆隆作响

   • Thunder grumbled in the distance.
   • My stomach grumbled loudly during the meeting.
   • The old engine grumbled as it started up.

   同义词dronegrowlgurglemurmurrumble