六龄齿
After you are six, your milk teeth begin to fall out.
在你六岁之后, 乳齿开始掉下来.
She was only six and still missing her front teeth.
她才6岁,门牙还没长出来。
His teeth went and hair got thin, but six months back in the hometown he was as right as rain.
他牙掉发稀,然而回到故乡半年又完全恢复了正常。
Teeth were randomly separated into six groups of 10 each and 2 positive controls. All experimental teeth were covered with three layers of nail varnish to prevent leakage from the root surface, leaving the apical 2-3 mm uncovered.
并将其随机分为6组,每组10颗,并有2颗作为阳性对照。
Dentists advise you to have your teeth checked every six months.
牙医建议大家每六个月检查一次牙齿。
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