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
I'd like to ask for your daughter's hand in marriage.
我希望你能把女儿许配给我。
How much will that be altogether?
总共多少钱？
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