Few animals feed on them today because they contain a lot of hard silicate which is bad for teeth.

今天很少有动物去吃这种植物，因为这种植物含有很多硬硅酸盐类物质，这种物质对牙齿很不好。

youdao

Low concentrations are good for teeth, but excessive concentrations can lead to debilitating disease, such as skeletal fluorosis, which has devastated some communities.

低浓度对牙齿有益，但浓度过高则可能导致使人衰弱的疾病，比如氟骨症，一些社区因此而成为一片废墟。

youdao

They took a plaster cast of the teeth for identification purposes.

他们做了这副牙的石膏模型作鉴别之用。

《牛津词典》

They swallowed it whole. Their teeth were used to rip the meat or plants into mouth-sized pieces, but were not used for chewing.

VOA: special.2010.06.04

The only rider on that being, if they're producing Coca-Cola and you have any kind of concern for your teeth, maybe you shouldn't produce so much anyway.

如果可口可乐是唯一的生产者,并且你狠关心牙齿健康的话,或许你就不应该生产这么多产品了

耶鲁公开课 - 博弈论课程节选

Ads in newspapers, like this one in Charleston, would read, "Negroes wanted. I am paying the highest cash prices for young and likely Negroes, those having good front teeth and being otherwise sound."

报纸上的广告,比如查尔斯顿市的这一则,是这么写的,"诚购黑奴,本人愿付最高价格,购买年轻可靠之黑奴,需有整洁的牙齿以及悦耳的声音"

耶鲁公开课 - 美国内战与重建课程节选

January is the traditional time of year for teeth gnashing from rail passengers as fares rise again.

BBC: Have train fares gone up or down since British Rail?

But the company hasn't published any long-term data showing laser procedures are better for teeth.

WSJ: To Cut Tooth Decay: A Laser vs. a Drill

Those operations are chains, including Aspen Dental, DentalOne and Heartland Dental Care, that are like the eyecare company Lenscrafters, only for teeth.

FORBES: Magazine Article