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
He's on leave now.
他现在在休假。
I was born in China and brought up in the U.S.A.
我出生在中国，在美国长大。
Without it we could not make a living.
要是没有这条河，我们就无法生存下去。