A few radial glial cells had single piece of cilium.

少数放射状胶质细胞有单纤毛；

Additionally the floral cilium such as orchid, sweet-scented osmanthus, wintersweet can be held back and suck the float particle in sluggish air and soot.

另外兰花、桂花、腊梅等植物的纤毛能截留并吸滞空气中的飘浮微粒及烟尘。