The builtins are white, the trim is white and the walls are beige.
她的床和书架是白色的，整体结构是白色的，配料是白的，墙是米白的。
2
Many systems need more types than those defined as built-ins in the specification.
许多系统需要的类型比规范中定义的内置类型更多。
3
The wiser way is to define functions only when you need to use the code multiple times and there are no PHP built-ins for the task you want to achieve.