答：所有申请都会被视作寻求在主注册簿上注册，除非在申请中另有说明。主注册簿是为那些具有显著性的商标准备的。副注册簿是为那些目前不具备显著性但能够通过使用获得显著性的商标（例如描述性商标）准备的。

A: All applications will be treated as seeking registration on the Principal Register unless otherwise stated in the application. The Principal Register is for marks that are distinctive. The Supplemental Register is for marks that are not yet distinctive but are capable of becoming so (e.g., descriptive marks).