I want to sign up for the event.

The accounting manager refused to sign off on the expense report.

Before sending the document, make sure to sign off on the last page.

The equation is solved by setting the two sides of the equal sign equal to each other.

The division sign (÷) is used to represent the operation of division.

The document was signed by both parties.

I attended a book signing event yesterday.

The traffic signal turned red, so I stopped my car.

The significance of this discovery cannot be overstated.

This is a significant achievement.