vol. is the short written form of volume, used when a long work comes in several separate books. A dictionary, an encyclopedia, a manga series, a set of collected letters, or an academic journal may run to many volumes, and instead of writing the whole word each time, people write vol. 1, vol. 2, and so on.

vol. vol. is是 volume volume 的 the short written form書面縮寫， used用在 when a long work當一部很長的作品 comes in several separate books分成好幾本書出的時候。 A dictionary字典、 an encyclopedia百科全書、 a manga series一套漫畫、 a set of collected letters一套書信集 or an academic journal或一種學術期刊 may run to many volumes都可能出到很多卷， and而 people人們 instead of writing the whole word each time不會每次都寫出整個字，而是 write寫 vol. 1, vol. 2 vol. 1、vol. 2， and so on這樣一路下去。

The dot is part of the abbreviation — it marks that letters have been cut off — and it is normally kept. The plural is usually vols. ("a set in 12 vols.").

The dot那個點 is part of the abbreviation是縮寫的一部分 — it marks它標示 that letters have been cut off有字母被切掉了 — and it is normally kept而且通常要保留。 The plural複數 usually通常 is是 vols. vols. ("a set in 12 vols.")（「一套十二冊」）。

You see it almost only in writing: on book spines, in library catalogues, in footnotes and reference lists, in shop listings for comics. When you read the sentence out loud you say the full word, "volume one" — nobody says "vol one" except very casually. Capitalisation follows the style of the list you are in: Vol. 3 with a capital V is common at the start of a title or on a cover, vol. 3 lower-case inside a sentence.

You你 almost only in writing幾乎只會在文字裡 see it看到它： on book spines在書背上、 in library catalogues在圖書館目錄裡、 in footnotes and reference lists在註腳和參考書目裡、 in shop listings for comics在賣漫畫的商品頁上。 When you read the sentence out loud當你把句子唸出來時 you say要唸 the full word完整的字， "volume one" "volume one" — nobody says沒有人唸 "vol one" "vol one"， except very casually除非非常隨便的時候。 Capitalisation大小寫 follows跟著 the style of the list you are in你所在的清單的格式走： with a capital V大寫 V 的 Vol. 3 Vol. 3 at the start of a title or on a cover在標題開頭或封面上 is common很常見， lower-case小寫的 vol. 3 vol. 3 inside a sentence用在句子中間。

Be aware that in other places the same three letters stand for quite different things — volunteer, volume as in loudness, even "volts" on some old labels — so the meaning here is the one about books and parts of a work.

Be aware要注意 in other places在別的地方 the same three letters同樣這三個字母 stand for可以代表 quite different things很不一樣的東西 — volunteer volunteer（志工）、 volume as in loudness音量的那個 volume、 even甚至 on some old labels一些舊標籤上的 "volts" "volts"（伏特） — so所以 the meaning here這裡講的意思 is the one about books and parts of a work是書和作品分卷的那一個。