非必要 meaning in Chinese

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" the more you work , the more mistakes you make
“做多错多。如非必要，不干为佳。
Do not stay in the middle lane unnecessarily
如非必要，切勿留在中行驶。
To discourage access for non - essential vehicles
劝阻非必要的车辆驶入
Using the separating paper to avoid the touch by mistake
使用离型纸避免版材与胶带非必要的接触
Non - necessary management cost for new rural cooperative medical system
新型农村合作医疗的非必要管理成本

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