Dozens of drones dispatched in a desperate attempt to battle toxic smog in Bangkok by spraying a water and molasses solution to catch air particles.

数十架无人机被派往曼谷，孤注一掷地试图通过喷洒水和糖浆溶液来捕捉空气颗粒物来对抗有毒烟雾。

For porous surfaces like paper or walls, fingerprints are detected by spraying a solution called ninhydrin on the surface where a print may be found.

对于像纸或墙这样的多孔表面，通过在可能发现指纹的表面喷洒一种叫做茚三酮的溶液来检测指纹。