床单不干净用英语怎么说

床单不干净可以用英文表达为 "the bed sheets are dirty" 或 "the bed sheets are not clean".

这个表达的来源可能是由于床单本身没有被清洁或更换，导致不干净。

下面是一些例句，希望对你有帮助：

"I noticed that the bed sheets were dirty when I checked into the hotel room." (我住进旅馆的时候发现床单不干净。)
"I can't sleep on these dirty bed sheets. Can you please change them for me?" (我不能睡在这些不干净的床单上。你能更换一下吗？)
"The housekeeping staff forgot to change the bed sheets before we arrived. They were dirty and had stains on them." (客房服务人员在我们到达前忘记更换床单了。它们不干净，上面还有污渍。)