求翻译：操作机床前必须戴防护眼镜，穿紧身工作服，工作袖，袖口扣紧，衣服不能敞开，严禁戴手套。女生戴好工作帽，辫子应放入帽内。是什么意思？

Before operating the machine must wear protective glasses, wearing tight clothes, work sleeve, cuff buckle, clothes can not open, non-wearing gloves. Good job girls wearing hats, braids inside the cap should be placed.

Before operating machine tools required to wear protective glasses, wearing tight clothing, work clothes, sleeves, cuffs fastened gloves cannot be opened, and strictly prohibited. girls wearing pigtails hat, work should be put into the hat.

Operates in front of the engine bed to have to wear protects the eyeglasses, puts on the tight-fitting work clothes, works the sleeve, the sleeve cuff fastens tightly, clothes cannot open wide, forbid strictly wearing the glove.The female student wears the work hat, the braid should put in the hat.

Operation before the machines must wear protective glasses, wear tight clothes, cuff, cuff buckle, clothing cannot be opened, is forbidden to wear gloves. Girls wear hats, braid should be placed within the CAP.

Operating the lathe must be worn and protected the glasses, wear the close-fitting working clothes, the job sleeve, the cuff is done up tightly, the clothes can't wide open, forbid wearing gloves. Girls put on the job cap, the pigtail should be put into cap.