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
Come on, you can tell me.
说吧，告诉我。
Better master one than engage with ten.
精通一事胜于会十事。
He's gone to England with his family. He won't be back until January.
他和家人一起回英国了。要到元月份才回来。