a specimen signature的用法和样例：
- This signature will also act as a specimen signature for future correspondences.
- Often there is no need for a reference, the customer's name, address and occupation, together with a specimen signature and an initial deposit being all that are needed.
- It was a specimen of his generosity.
- This is a specimen of the new fabric.
- A member of a collection or set; a specimen.
- The doctor will need a specimen of your blood.