核心畫面
Not the real thing in fact, but the same thing in effect. Something has come so close to being true, or so close to a full amount, that the gap left over is too small to argue about — so you talk about it as if it had arrived.
可以想成一件事已經走到門口，只差最後一步沒踏進去：帳面上還沒完全到，實際效果卻跟到了一樣，剩下那一小段差距小到不值得…更多收起
可以想成一件事已經走到門口，只差最後一步沒踏進去：帳面上還沒完全到，實際效果卻跟到了一樣，剩下那一小段差距小到不值得計較，所以你就當它到了來講。virtually 這個字給人的感覺一直是「名義上不算，實質上算」。原始詞典資料5 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
virtuallyadv/ˈvɚ.t͡ʃə.wə.li/
- 1
Almost but not quite.
- With our Medicare supplemental insurance plan, there are virtually no claim forms to fill out. (Advertisement)
- By surviving the first six minutes Hargreaves matched the total amount of playing time he had managed previously in virtually three years - and by scoring his first goal since April 2008 he set the hosts on their way to a fifth win of the season in all competitions.
- 2
In essence or functionally, but not in fact, formally, or technically.
- virtually a member of the family
- 3
algebramathematicssciencesOf a subgroup of finite index.
- In this case W has a diagram with 2 vertices and one edge labelled ∞, and is therefore the infinite dihedral group. Thus W is virtually ℤ.
- In this paper, we are mainly concerned with homogeneity in the class of finitely generated virtually free groups, i.e. finitely generated groups with a free subgroup of finite index.
- 4
mathematicssciencestopologyOf a covering space of finite degree.
- Another class of small manifolds consists of those that are not virtually Haken (a manifold is virtually Haken if it is finitely covered by a Haken manifold).
- We call a hyperplane Y in a VH-complex X virtually clean if there exists a finite-sheeted covering map p : X̂ → X and a connected component Y ⊆ p⁻¹Y such that the hyperplane Ŷ of X̂ is clean.
- 5
By computer or in cyberspace.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。