A CD-R is a kind of compact disc you can put information onto yourself — music, photos, or computer files — using a writer on a computer. The R stands for recordable.

A CD-R is CD-R 是 a kind of一種 you can你可以 using a writer on a computer用電腦上的燒錄器 yourself自己 put information onto把資訊放上去 compact disc的光碟 — music音樂、 photos照片、 or computer files或電腦檔案。 The R這個 R stands for代表的是 recordable recordable，可以錄的。

The important limit: you can record onto it only once. After you “burn” the disc (that is the usual verb), you cannot wipe it clean and start again. You can sometimes add more files later if space is left, but you cannot erase what is already there.

The important limit重要的限制： you can record onto it你可以把東西燒上去的機會 only once只有一次。 you你 "burn"「燒」 the disc了這片光碟 After之後 — that is the usual verb這是一般用的動詞 — you cannot就不能 wipe it clean把它清空 and start again重新來過。 if space is left如果空間還有剩， You sometimes can你有時可以 later之後 add more files再加一些檔案， but you cannot但你不能 erase刪掉 what is already there已經在上面的東西。

Blank CD-Rs were very common in the 1990s and 2000s; people used them to copy music or to hand in school work. Younger people may hardly use them now, because USB sticks and phones are easier, but the name still appears in older manuals and exam lists.

Blank CD-Rs空白的 CD-R in the 1990s and 2000s在 1990 和 2000 年代 were very common非常普遍； people人們 used them用它們 to copy music來拷貝音樂， or to hand in school work或交學校作業。 Younger people比較年輕的人 now現在 may hardly use them可能幾乎不用它們了， because因為 USB sticks and phones隨身碟和手機 are easier比較方便， but the name但這個名字 still仍然 in older manuals and exam lists在比較舊的說明書和考試單字表裡 appears出現。

Do not mix it up with a CD-RW, which you can record onto many times, or with a CD-ROM, which usually comes already filled and is not for you to record onto.

Do not mix it up with不要把它搞混成 a CD-RW CD-RW， which you can record onto many times那種你可以燒很多次； or with a CD-ROM也不要搞混成 CD-ROM， which usually comes already filled那種通常一來就已經裝滿內容， and is not for you to record onto不是要給你燒的。