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他把那些断片切碎，然后把它们焊在一起。He cuts the pieces and solders them together.这些零件完好地焊在一起了.The parts welded together perfectly.在这样的温度下焊钢需要速度和技术.It takes speed and skill to weld steel at this heat....

“焊”的拼音为：hàn...