MiddleBlock: Here goes Middleware software like web and applications servers.
中层：这里是一些中间件的软件，如网络和应用服务器。
2
Conflicts between the Israelis and Palestinians have been called a major stumbling block to Middle East peace.
以色列和巴勒斯坦之间的冲突被称为中东和平的主要绊脚石。
3
Your code will be much easier to read and test if the class has a name attached and isn't placed right in the middle of an entirely different block of code.