[Expired]Dyson V15 Detect Total Clean Extra | Yellow/Nickel | Refurbished

: When you shine the laser on the floor, the shadows of the dust stand out against the surface, so the tiny particles that are usually “invisible” to the naked eye become clearly visible under the green laser. 激光照射地面，灰尘阴影跟地面就能形成对比，平时肉眼“看不见”的细微颗粒在绿色激光下就很清楚地能被看见了

回复 @果子你醒醒果子 : I kind of get it now, it's like the fluffy things we see in the sunlight during the afternoon. 有点明白了，就是好像平时我们午后在太阳光下看到的那些绒绒啊