As with abstract classes, you can define any number of method signatures.
对于抽象类，可以定义任意数目的方法签名。
2
The marker's first number represents time in abstract units; the second optional number enclosed in parenthesis is the number of requests that terminate at this point.
标记的第一个数字表示以抽象单位计算的时间；第二个使用圆括号括起的可选数字表示在该点终止的请求数。
3
There are also some very amazing statues, many of which follow the theme of life in Egypt, especially in rural areas, but others vary, and include a number of abstract works.