| 1. | " the more you work , the more mistakes you make
“做多错多。如非必要，不干为佳。 |
| 2. | Do not stay in the middle lane unnecessarily
如非必要，切勿留在中行驶。 |
| 3. | To discourage access for non - essential vehicles
劝阻非必要的车辆驶入 |
| 4. | 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 |
| 5. | 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 |
| 6. | Dont handle food more than needed , use forks and tongs
非必要时不要用手处理食品，使用刀叉和钳子处理食品。 |
| 7. | During any incident , evacuate all non - essential personnel from the area
在任何情况下，须将非必要人员撤离。 |
| 8. | Unless it is absolutely necessary , modifications of erp systems should be avoided
如非必要，应避免修改erp系统 |
| 9. | Without special medical knowledge , one should not join the rescue unless necessary
不要试图作太多急救,如非必要,不可脱除衣服。 |
| 10. | All non - essential staff ( including students ) should not be allowed on the unit / ward
所有非必要人员（包括学生在内） ，不可进入隔离单位。 |
