| 例句 |
signing up (for)verbpresent participle of sign up (for) to become a member ofthey both signed up for a Spanish class enlisting (in), enrolling (in), entering, joining, signing on (for) reenlisting(or re-enlisting), reenrolling(or re-enrolling), reentering, rejoining, re-uppinggetting in demitting dropping out, quitting, withdrawing |