Perforated describes something that has a hole or holes made through it. Almost always it means the holes are deliberate and regular: perforated paper (the dotted line of tiny holes so you can tear a page out cleanly), perforated metal sheets, perforated ceiling tiles that soak up noise, perforated leather in a car seat so your back does not sweat. In a shop or a catalogue this is a plain, useful word.

PerforatedPerforated describes something that has a hole or holes made through it用來形容某樣東西上被打了一個洞或好幾個洞。Almost always it means the holes are deliberate and regular幾乎都是指那些洞是刻意、規律打出來的：perforated paper (the dotted line of tiny holes so you can tear a page out cleanly)像 perforated paper（一排小洞的虛線，讓你可以整齊撕下一頁）、perforated metal sheetsperforated metal sheets（打孔金屬板）、perforated ceiling tiles that soak up noise吸音用的 perforated ceiling tiles（打孔天花板）、perforated leather in a car seat so your back does not sweat還有汽車座椅上的 perforated leather（打孔皮革，讓背部不悶熱）。In a shop or a catalogue在店裡或型錄上，this is a plain, useful word這是個平實好用的字。

But it is also the standard medical word for damage: a perforated eardrum after a slap or a dive, a perforated ulcer, a perforated bowel — all of which mean a hole where there should not be one, and all of which are emergencies. So the same word is either a design feature or a diagnosis, and only the noun after it tells you which.

But it is also the standard medical word for damage但它也是醫學上表示「損傷」的標準用字：a perforated eardrum after a slap or a dive像是被巴掌打或跳水造成的 perforated eardrum（耳膜穿孔）、a perforated ulcerperforated ulcer（潰瘍穿孔）、a perforated bowelperforated bowel（腸穿孔）——all of which mean a hole where there should not be one這些都表示一個不該存在的洞，and all of which are emergencies而且都是緊急狀況。So the same word is either a design feature or a diagnosis所以同一個字，可能是設計特色，也可能是診斷，and only the noun after it tells you which只有它後面接的名詞才能告訴你是哪一種。

Note that although it looks like a past participle of 'perforate', people use it far more as a straightforward adjective; you can even say 'more perforated' about a sheet with more holes, though that is rare.

Note that although it looks like a past participle of 'perforate'要注意，雖然它看起來像是 'perforate' 的過去分詞，people use it far more as a straightforward adjective人們用它的時候，多半當成一個普通的形容詞來用；you can even say 'more perforated' about a sheet with more holes你甚至可以說 'more perforated' 來形容洞更多的一片，though that is rare雖然這種說法比較少見。