【英语时差8,16】骨质疏松

 Osteoporosis literally¹ means porous² bone. It is characterized by loss of bone density³ and the deterioration⁴ of bone tissue, which makes bones fragile and more likely to fracture. The important thing about osteoporosis is figuring out whether you’ve got it before you injure yourself. And that’s pretty easy to do: there’s a specialized⁵ test that measures bone density, and based on its results, doctors can prescribe various medications to slow the disease down.

1 literally   

adv.照字面意义，逐字地；确实

参考例句：

• He translated the passage literally.他逐字逐句地翻译这段文字。
• Sometimes she would not sit down till she was literally faint.有时候，她不走到真正要昏厥了，决不肯坐下来。

2 porous   

adj.可渗透的，多孔的

参考例句：

• He added sand to the soil to make it more porous.他往土里掺沙子以提高渗水性能。
• The shell has to be slightly porous to enable oxygen to pass in.外壳不得不有些细小的孔以便能使氧气通过。

3 density   

n.密集，密度，浓度

参考例句：

• The population density of that country is 685 per square mile.那个国家的人口密度为每平方英里685人。
• The region has a very high population density.该地区的人口密度很高。

4 deterioration   

n.退化；恶化；变坏

参考例句：

• Mental and physical deterioration both occur naturally with age. 随着年龄的增长，心智和体力自然衰退。
• The car's bodywork was already showing signs of deterioration. 这辆车的车身已经显示出了劣化迹象。

5 specialized   

adj.专门的，专业化的

参考例句：

• There are many specialized agencies in the United Nations.联合国有许多专门机构。
• These tools are very specialized.这些是专用工具。