🧩 词语组成解析
breadth
[brɛdθ]
n. 宽度;宽容;（知识、兴趣等的）广泛;
index
['ɪndɛks]
n. 索引;<数>指数;指示;标志;
vt. 给…编索引;把…编入索引;[经济学]按生活指数调整（工资、价格等）;
vi. [机械学]转位;
in(in)+dex(proclaim)→指针；索引；指数；食指；指标
🗣️ 情景例句
What was your best subject in college?
大学时你哪门功课最好？
To push the wrong button
按错了按钮
Which would you prefer?
你要选哪个？