To understand this idiom, we must understand a bit about horse's teeth.

我们必须稍微了解一下马齿，以便更好理解这个习语。

She scowled again, her face all horse teeth and glowering suspicion. " You'll wear your chains, Kingslayer" .

她又皱眉了，露出一口马牙和那种怒冲冲的怀疑。" 你得好好戴着镣铐。弑君者。"

My role when it comes to floating horse teeth is to kind of be the shoulder, the muscle.

给马锉牙时，我的肩膀肌肉在用力。