Definition
To begin discussing the most essential or fundamental aspects of a matter.
開始討論最基本或最重要的事實。
We need to get down to brass tacks; what is the budget for this project?
我們需要切入正題；這個項目的預算是多少？
After all the small talk, we finally got down to brass tacks and discussed the actual sales figures.
在所有的寒暄之後，我們終於切入正題，討論實際的銷售數據。
Let's not waste any more time and get down to brass tacks to see how we can solve this problem.
讓我們不要再浪費時間，直接切入正題，看看如何解決這個問題。