Area density
[电] 面密度
🏥 医学释义
表面密度
🧩 词语组成解析
area
['ɛrɪə]
n. 地区;区域，范围;面积，平地;领域;
🗣️ 情景例句
It's extremely good of you to do this for me.
你帮我做了这件事，真是太好了。
I don't know what I should have done without your help.
要不是您的帮助，我真不知道该怎么办。
The main school holidays are from mid-December till early February when the days are long and warm.
学校主要的假期从12月中旬起至第二年的2月初为止，这段时间白昼很长，气候也暖和。