Rigid structure
[化] 刚性结构
🧩 词语组成解析
🗣️ 情景例句
When he came to the States five years ago, he had only forty dollars in his pocket.
五年前他来美国时，口袋里只有40美元。
How's your brother?
你的兄弟好吗？
Modern industry is based on the conception of the maximum production at lowest cost,
以最低成本获取最多产品，