was a great success
その映画は大成功だった。
That movie was a huge success.
パーティーは大成功だった。
The party was a huge success.
天気が良かったので、その野外コンサートは大成功だった。
The outdoor concert was a great success because the weather was good.
大成功だった。
It was a huge success.
我々の交渉は失敗どころか、大成功だった。
Far from being a failure, our negotiations were a resounding success.