踢脱, 中线开球

[ verb ]
commence officially
<verb.social> inaugurate

kick off \kick` off"\ v. i. (Football)
To kick the football from the center of the field to start a
football game or to resume it after a score; as, they kicked
off at two o'clock.
[WordNet 1.5 +PJC]


kick off \kick` off"\ v. t.
to begin; to commence; as, they kicked off the rally with a
playing of the national anthem.

Syn: begin, commence, start.
[PJC]