VOA慢速英语:Wising Up About Wisdom Teeth

短语讲解：

1. Wisdom teeth are normally the last teeth to appear. This usually happens when people are in their late teen years or early twenties -- in other words, when they are older and wiser.

wisdom teeth智齿;迟牙
in other words换句话说
例句：He became, in other words, a great hero.
换句话说, 他成了一位伟大的英雄。

2. They can grow into place normally and never cause a problem.

grow into伸入…之中
例句：The tree has grown into the wall of the building.
这棵树长进建筑物的墙中。

3. Sometimes they even push sideways through the gums.

push through (使)穿过
例句：The hole is too small; I cannot push my arm through.
这个洞太小了, 我的胳膊伸不过去。

4. An impacted wisdom tooth is one that fails to completely rise through the gums -- the term is erupt.

fail to未能…
例句：He failed to pass the examination through carelessness.
由于粗心, 他考试没及格。

5. The American Dental Association says removal is generally advised when wisdom teeth only partly break through the gums.

break through突破，冲破
例句：The sun broke through the clouds.
太阳冲破云层出来了。

6. And removal is called for in cases where fluid collects around a wisdom tooth that is partly or fully below the gum.

call for需要; 要求
例句：Your plan will call for a lot of money.
你的计划需要许多钱。

7. It may depend on the condition of the wisdom teeth and the number to be removed.

depend on随…而定, 取决于
例句：Whether the game will be played depends on the weather.
比赛是否举行要看天气而定。

8. Both can be treated with cold wraps and medication.

treat with用防护措施处理某物
例句：New timber should be treated with a preservative.
新采的圆木应进行防腐处理。