衰减 (shuāi jiǎn): Decline (Verb) — Meaning & Stroke Order

The sound attenuated in the distance.

This new material can effectively prevent signal attenuation during transmission.

His influence has not declined; on the contrary, it continues to grow among the younger generation.

The signal significantly attenuated after passing through the wall, causing a drop in call quality.

I'm worried that long-term lack of exercise will lead to a decline in muscle strength and bone density.