in full swing
US /ɪn fʊl swɪŋ/
UK /ɪn fʊl swɪŋ/

成语
1.
如火如荼, 全面展开
at the peak of activity or progress; fully active or operational
示例:
•
The party was in full swing by the time we arrived.
我们到的时候,派对已经如火如荼了。
•
Construction on the new building is now in full swing.
新大楼的建设现在已经全面展开。
在 Lingoland 学习这个单词