square troughs were fading away
...Boundary between Square Troughs of the South and Boats of the North) 安徽方鏪日渐式微 (Square Troughs Were Fading Away) 方鏪官锭 (Official Square Troughs) ..
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square troughs were fading away
方形的食槽正在消失
以上为机器翻译结果，长、整句建议使用 人工翻译 。