He belongs to the lower middle class.
他来自中产阶级下层。
A test of lower middle temperature blackening on steel part was introduced.
介绍了钢铁件低中温发黑工艺试验。
For now, the poor and lower-middle class together account for 75% of total spending.
目前，穷人和中低阶层占消费总数的75%。
In both these countries a new lower-middle class is emerging from poverty.
在这两个国家中，一个新的中低阶层正从贫穷中崛起。
In both these countries a new lower-middle class is emerging from poverty.
在这两个国家中，一个新的中低阶层正从贫穷中崛起。
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