在英语中，表达“一个决定一个决议”可以有多种方式，以下是一些常见的表达方法：
- One decision and one resolution.
- A decision and a resolution.
- One determination and one resolution.
- A determination and a resolution.
- A decision made and a resolution passed.
- A determination reached and a resolution adopted.
- A decision taken and a resolution made.
这些表达方式都可以根据上下文和正式程度进行选择。例如，在正式的文档或演讲中，可能会使用“A decision made and a resolution passed”这样的表述。而在日常对话中，简单的“A decision and a resolution”就足够了。