To prep the eye to receive the tooth and lens, the doctors placed a graft over the eye to promote moisture.
2
为了使眼睛做好接收牙齿和晶状体的准备，医生在眼睛上方放置一片脸颊移植物以保持水分。
To prep the eye to receive the tooth and lens, the doctors placed a cheek graft over the eye to promote moisture.
3
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。
Low concentrations are good for teeth, but excessive concentrations can lead to debilitating disease, such as skeletal fluorosis, which has devastated some communities.
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