To bare one's teeth and protrude one's mouth in anger; to look furious and indignant.
小孩子发现自己的玩具被弄坏了，气得努牙突嘴，眼泪在眼眶里打转。
The child, finding his toy broken, bared his teeth and protruded his mouth in anger, tears welling up in his eyes.
Era:
Ancient
Frequency:
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