英语学习：你的床单干净吗

"Even if you don't have allergies per se, you can have an allergic response," Tierno said.

“即使你本身不过敏，你可能也会有过敏性反应，”提艾诺说道。

Another reason your sheets get dirty quickly has little to do with your behaviour or sweat patterns - the issue is simply gravity.

你的床单很快就变脏的另一个原因与你的行为或流汗关系不大，这只不过是引力的问题。

"Just like Rome overtime was buried with the debris that falls from gravity, gravity is what brings all that material into your mattress," Tierno said.

“就像重力会引起碎片的坠落，而超过一定时间，罗马就会埋葬在这些碎片中一样，重力也会把所有的那些物质带到你的床垫上，”提艾诺说道。

One to two weeks of this build-up is enough to leave anyone with a scratchy throat - especially those with significant allergies or asthma.(One in six Americans have allergies.)

这些物质积累一到两周就足以让任何人喉咙沙哑，特别是那些有严重过敏症或哮喘的人。(六分之一的美国人都有过敏症。)

"If you touched dog poo in the street, you'd want to wash your hands," said Tierno. "Consider that analogous to your bedding.”

“如果你在街上碰到了狗便便，你就会想洗一下手，”提艾诺说。“你的床上用品也是一样的。”