用于防止长期闲置存放时灰尘颗粒进入热端，造成堵头的可能。

It is used to prevent dust particles from entering the hot end and causing clogging when it is left idle for a long time.

防尘罩设计有四个小突起作为卡扣，防止脱落。 取下时，只需捏住两侧，轻轻向下拉即可取下。

--The dust cover is designed with four small protrusions as buckles to prevent it from falling off. When taking it off, just pinch the two sides and gently pull it down to remove it.