Developed blade area
[化] 展开叶片面积
🧩 词语组成解析
a. 发达的（国家或地区）；成熟的
blade
[bled]
n. 刀片，剑;（壳、草等的）叶片;桨叶;浮华少年;
area
['ɛrɪə]
n. 地区;区域，范围;面积，平地;领域;
🗣️ 情景例句
It was our pleasure.
不胜荣幸。
He knows much who knows how to hold his tongue.
懂得缄默的是明白人。
Were there any telephone messages for me while I was away?
我外出期间有我的电话吗？