gangbuster （尤指商业上）;非常成功的侦破犯罪团伙者

The economy was still going gangbusters.

经济依然保持着强劲的发展势头。

2. On April 27th Alphabet, Google’s parent company and the world’s biggest digital-ad platform, reported first-quarter advertising revenues up by 34%, year on year.

year on year 同比

Spending has increased year on year.

与去年同期比较，开销增加了。