In an age of information overload, distinguishing essential data from superfluous noise is a critical skill.

superfluous 由前缀 super-（表示"超过"）和词根 fluere（拉丁语"流动"）组成，字面意思是"流得过多的"。引申为"多余的、过剩的"，指超出实际需要的部分。