考研英语长难句｜Day13

01

今日长难句

But height loss can also be due to osteoporosis, a bone disease that develops when bone mineral density and bone mass decreases, or when the quality or structure of bone changes.

02

词汇解析

height loss 变矮

osteoporosis [ˌɑːstioʊpəˈroʊsɪs] n. 骨质疏松（症）

density [ˈdensəti] n. 密度，浓度

bone mineral density 骨密度

bone mass 骨量

decrease [dɪˈkriːs ] v. 减少，降低

03

结构分析

✔句子主干：

But height loss can also be due to osteoporosis

✔同位语：

a bone disease

✔定语从句：

that develops

✔状语从句1：

when bone mineral density and bone mass decreases

✔状语从句2：

or when the quality or structure of bone change

04

参考译文

But height loss can also be due to osteoporosis, a bone disease that develops when bone mineral density and bone mass decreases, or when the quality or structure of bone changes.

Version1：但变矮也可能是骨质疏松导致的。骨质疏松症是一种骨骼疾病，当骨密度和骨量下降时，或当骨骼质量或结构发生变化时，就会发生。

Version2：但变矮也可能是由骨质疏松导 致的，骨质疏松指的是骨密度和骨量下降，或骨骼质量或结构发生改变。