1. key signature
   n. 音调符号
   
2. signature tune
   音调
   
3. time signature
   n. [乐谱]拍子记号
   

1. Her signature is almost illegible.
   她的签字很难辨认.
2. Her signature was an illegible scrawl.
   她的签字潦草难辨.
3. They aim to raise ten thousand signatures.
   他们以征集1万人签名为目标。
4. My signature was forged on the check.
   支票上我的签名是伪造的。
5. His signature was an illegible scrawl.
   他的签名潦草难以辨认。

　5个名词解释