信号衰减了。
The signal weakened.
to weaken; to attenuate
Every character draws itself, stroke by stroke. Then grab the brush: trace it yourself and hear the word when you finish.
Nice writing!
Chinese words snap together like bricks. Every word below shares a character with this one, so you are already halfway to knowing it.
信号衰减了。
The signal weakened.
功能衰减了。
The function has weakened.