VOA慢速英语:Airport Security Idea Takes Flight in Study of Mummies and Diseases

2.abnormal adj.反常的, 异常的; 变态的

Is the child abnormal in any way?
这孩子是否在哪方面有点不正常?

3.permanent adj.永久(性)的, 固定的

例句：The coat gives permanent protection against heavy rain.
      这种防雨衣经久耐用。

      He is one of our permanent employees.
      他是我们的终身雇员之一。

4.implant v.在身体某部植入(组织等), 移植

例句：The operation to implant the artificial heart took two hours.
      人工心脏植入手术花费了两小时。

5.lower vt.vi.(使)降低; (使)跌落