brass tacks的用法和样例：
例句
- He wore a belt studded with brass nails.
他系了一根饰满铜钉的带子。 - The leather was highly polished, and all the brass rivets and hardware shone brightly.
马具制作精良，我这辈子都没见过，皮子打磨得锃亮，铜钉耀眼。
词汇搭配
- get down to brass tacks 谈要点(转入本题)...
- come down to brass tacks 讲座裨问题(谈要点...
