情况每天都在变化，所以你必须保持对最新动态的掌握。

The situation changes daily, so you've got to ___keep ___your ___finger ___on ___the ___pulse.

在音乐行业，密切关注新趋势的最新动向至关重要。

In the music industry, it's essential to ___keep ___your ___finger ___on ___the ___pulse of new trends.

作为投资者，你需要准确把握金融市场的最新动态。

As an investor, you need to ___have ___your ___finger ___on ___the ___pulse of financial markets.