in full swing

副词 in full swing:

1. proceeding with full vigor
   同义词：in full action

1. The party was in full swing when we arrived.
   我们到达时恰值聚会的高潮。
2. The meeting was in full swing when we arrived.
   我们到那里时，会议正开得热闹。
3. The wedding was in full swing when the witch came in.
   当女巫进来时婚礼正进行得热闹。