You can use also to give more information about a person or thing, or to add another relevant fact.
The book also includes an appendix with a listing of all US presidents.
这本书还包含一个列有所有美国总统的附录。
He is an asthmatic who is also anaemic.
他是一个哮喘病人,并且还贫血。
You can use also to indicate that something you have just said about one person or thing is true of another person or thing.
General Geichenko was a survivor. His father, also a top-ranking officer, had perished during the war.
格晨科将军是一位幸存者。他的父亲也是一位高级军官,在战争中丧生了。
This rule has also been applied in the case of a purchase of used tyres and tubes.
这个规定也适用于购买使用过的轮胎和内胎。