Developed length
[化] 展开长度
🧩 词语组成解析
a. 发达的（国家或地区）；成熟的
🗣️ 情景例句
Where is your hometown?
你的籍贯是哪里？
I haven't seen you for age. You haven't been sick, have you?
好久不见。你不是病了吧？
It's black. It's a black car.
是黑色的，一辆黑色的车。