The problem of developing bend curve parts needs to be solved imminently.
弯边零件的展开是急需解决的问题。
The problem of developing bend curve parts needs to be solved imminently .
弯边零件的展开是急需解决的问题。
The methods are: it must curve knees when you bend waist and touch toes with hands or collect object.
帮助的办法是:在弯腰用手接触脚趾或拾取物体的时候,一定要弯曲膝部。
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