The challenge in computer science is to bridge the gap between the theoretical models and practical applications.

唯一安全的系统是关闭的，浇筑在混凝土块中，并密封在有武装警卫的铅衬房间中。

The past is a foreign country; they do things differently there.

做你自己，其他人已经有人做了。

我们生来都继承了一定的时间，我们必须学会明智地使用它。