Her signature was an illegible scrawl.
她的签名潦草难辨。
The name on the gravestone was badly worn and almost illegible.
墓碑上的名字磨损得很严重，几乎无法辨认。
Her handwriting is completely illegible.
她的字迹完全不能辨认。
It is impossible to deliver this letter because the address is illegible.
由于地址字迹不清，致使信件无法投递。
The words have become illegible.
字迹漫漶。