所有票据一经售出概不退还，无论下雨还是晴天活动照常举行。

Washington Convention Center. All ticket sales are final and events take place rain or shine.

youdao

所有票据一经售出概不退还，无论下雨还是晴天活动照常举行。

Washington Convention Center. All ticket sales are final and events take place rain or shine.

youdao