Actually, the term snowflake refers to an individual snow crystal, while snow falling from the sky are called snowballs which include hundreds or even thousands of small snowflakes stuck together.

• 事实上,雪花一词是指个别的雪晶,而从天空降下来的雪称为雪球,它聚集了数百甚至数千个细小雪花黏在一起。