VOA慢速英语:Laying the Roots for Healthy Teeth in Young Children

短语讲解：

1. And adults are not the only ones at risk.

at risk有危险
例句：The disease is spreading, and all children under five are at risk.
这疾病在蔓延, 五岁以下的小孩都有危险。

2. Do the same if a baby is fed with a bottle.

feed with用…喂; 向……供给
例句：They feed the horses with oats.
他们用燕麦喂马。

3. Experts say if you decide to put your baby to sleep with a bottle, only give the child water.

put to使(某人)进入〔处于〕(某种状态)
例句：This gas will put you to sleep during the operation.
这种气体将使你在手术中处于睡眠状态。

4. For example, it is often added to drinking water supplies.

add to增加, 加强
例句：The office looked exactly the same as before, only some charts were added to the wall.
办公室里还是那个老样子, 只是墙上多了一些图表。

5. The fluoride mixes with enamel, the hard surface on teeth, to help prevent holes, or cavities, from forming.

mix with (使)与…混〔结〕合
例句：Mix the eggs with the flour.
把蛋和面粉搅拌起来。
prevent from阻止, 防止
例句：Cotton mittens will prevent the baby from scratching his own face.
棉的连指手套使婴儿不会抓伤自己的脸。

6. It could interfere with the correct development of permanent teeth.

interfere with干预, 阻挠, 妨碍, 阻止
例句：The noise interferes with my work.
这噪音妨碍我的工作。