When we use the tools we should wear protective glasses and keep our eyes are not used to access tools that we should work, and finally, one should not do more things simultaneously.
When we use We should keep our eyes and wearing glasses, do not use tools in place. Finally, we should work individually, do not do many things simultaneously.
When we use the tool. We should wear glasses protect our eyes and keep the tools is not in place. And finally we should work one by one shouldn"t do many things at the same time.