Blu-tack is a soft, sticky lump — a bit like very firm chewing gum — that you press onto the back of a poster or a card to hold it on a wall. You can pull it off later and use it again, and it should not take the paint or wallpaper with it.

Blu-tack藍丁膠 is a soft, sticky lump是一種軟軟黏黏的一小塊東西——a bit like very firm chewing gum有點像很硬的口香糖——that you press onto the back of a poster or a card你把它壓在海報或卡片背面，to hold it on a wall用來把它固定在牆上。 You can pull it off later and use it again之後可以撕下來重複使用，and it should not take the paint or wallpaper with it而且應該不會把油漆或壁紙一起撕下來。

It began as a brand name; the original stuff is blue, and tack here is the sticky hold. In Britain, Australia, and New Zealand people use Blu-tack for the stuff in general, even other brands.

It began as a brand name它本來是個品牌名稱；the original stuff is blue原本的東西是藍色的，and tack here is the sticky hold而tack在這裡就是黏著的意思。 In Britain, Australia, and New Zealand在英國、澳洲和紐西蘭，people use Blu-tack for the stuff in general大家會用Blu-tack泛指這類東西，even other brands連別的牌子也一樣叫。

You can also blu-tack something to a wall, as a verb. Though actually, American English more often says poster putty or sticky tack. In a Taiwan classroom this is simply the English for 藍丁膠.

You can also blu-tack something to a wall你也可以把blu-tack當動詞用，把東西blu-tack到牆上。 Though actually不過其實，American English more often says poster putty or sticky tack美式英文比較常說poster putty或sticky tack。 In a Taiwan classroom在台灣教室裡，this is simply the English for 藍丁膠這就是藍丁膠的英文說法。