牙線清潔？

《美聯社》發現，由於缺乏足夠證據支持，新版本的《國民飲食指南》悄悄放棄建議民眾每日使用牙線。有牙醫雖承認證據不足，但仍會建議人們使用牙線清潔，以免發現牙周病時已經太遲…

"I know of no dentist who flosses. Not one. And of the colleagues who don’t walk away bored witless when I have broached the subject of flossing, most admit that when they tried it, it was really difficult to do effectively, even with their assumed level of dexterity."

Dentists have stopped being strung along by the great flossing yarn. About time

In Britain we’ve long known about the futility of floss, and now Americans have brushed up on their science, too. As a health measure, it simply doesn’t work

THEGUARDIAN.COM|由 OLLIE JUPES 上傳

By STEVE LOHR
President Obama’s economic recovery plan pours money into old-fashioned public works projects like roads and bridges, but it also has some ambitious 21st century twists.

yarn 

Pronunciation: /jɑːn/ 

NOUN

1[MASS NOUN] Spun thread used for knitting, weaving, or sewing:hanks of pale green yarn[COUNT NOUN]: a fine yarn for a lightweight garment

More example sentencesSynonyms

2informal A long or rambling story, especially one that is implausible:he never let reality get in the way of a good yarn