virtual
adjective
1 [before noun] almost a particular thing or quality:
例句：Ten years of incompetent government had brought about the virtual collapse of the country's economy.
War in the region now looks like a virtual certainty.
2 describes something that can be done or seen using a computer and therefore without going anywhere or talking to anyone:
例句：virtual shopping/banking
virtually /?v?.tju.?.li/ US /?v?-/
adverb
almost:
例句Their twins are virtually identical.
That wine stain on my shirt has virtually disappeared.
让我们看看这个剑桥高阶词典上的解释吧！英英词典才是学英语的至宝！
下面请看我的翻译和分析
1.adjective，[before noun] almost a particular thing or quality。
形容词，用在名字前面，做前置定语，这里的意思是指“一个特定的事物或是品质！”，对应中文意思的“真实的”
2 describes something that can be done or seen using a computer and therefore without going anywhere or talking to anyone
这里是指一件可以用电脑完成，而且不用去任何其他地方就能完成的事情，这是例子，virtual shopping/banking，中文是“（虚拟的)网络购物，（虚拟的）网上银行”，这里对应中文意思的“虚拟”，也可以说网络那方面的东西，如“虚拟世界（网络世界，与真实世界相对应）”
adverb
almost，还有一个意思就是用作副词，做“大概，几乎”的意思！这个副词词性是不经常用的！
学英语的话，到了一定程度，最好还是弄一本英英词典！这样会帮助很大的！
希望可以帮到您！