盛大な拍手を

a big round of applause

→ 盛大だ
phrase Rare #41,333
a big round of applause Often used when asking an audience to applaud someone. The final を marks applause as the object of the verb or request that follows.
JA: 素晴らしい演奏に、盛大な拍手をお願いします。
EN: A big round of applause for that wonderful performance, please.

聴衆は、その歌手に盛大な拍手を送った。

The audience gave the singer a big round of applause.

皆さん盛大な拍手を!

A big round of applause, everyone!

— マルコムX (1992)

もう一度盛大な拍手をお願いします

One more big round of applause, please.

— ほんとうのピノッキオ (2019)

世界一強い男に盛大な拍手をどうぞ

Let’s give a thunderous round of applause to the strongest man in the world!

— ほんとうのピノッキオ (2019)