"Clear and concise"是表示"大且干净"的常用说法。
这个短语来源于拉丁语，"clear"一词意思是"明确的"，"concise"意思是"简洁的"。
一些例句如下:
The instructions were clear and concise, so it was easy to understand what to do.
The report was clear and concise, which made it easy to identify the key findings.
The presentation was clear and concise, and the audience appreciated the simple and easy-to-understand format.
以上例句的中文翻译如下：
说明明确简洁，很容易明白要做什么。
报告明确简洁，很容易识别出关键发现。
演讲明确简洁，观众很欣赏这种简单易懂的格式。