Are your gums bleeding?

你的牙龈正在流血吗？

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The toothbrush gently removes plaque without damaging the gums or causing bleeding.

牙刷轻轻地刷去齿菌斑，没有伤及牙床或引起出血。

《柯林斯英汉双解大词典》

Signs of diabetes show up all over the body, from bleeding gums to tingling feet to darkened skin patches on the neck and underarms.

糖尿病的前兆在身体的各个部位都有可能出现，包括：牙龈出血、脚痛、颈部及腋下部分皮肤变黑。

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Cambara remembers his gums bleeding prolifically and receding wastefully at a phenomenal rate, the inflammation, combined with the irritation on account of the tartar deposits, causing the loosening of several of his teeth.

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And the laser cuts gums without causing much bleeding.

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The sailor was dirty and salty, but he wasn't hungry, and thanks to all the lime juice he'd drunk his gums weren't bleeding, his hair was still rooted, his breath wasn't as foul as it might be, and his lips were pinker than black.

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