Segment 2 is for stack and dynamicmemory allocation.
段2预留给堆栈和动态内存分配。
2
When components are developed, there can be a lot of dynamicmemory allocations.
在开发组件时，可能存在大量的动态内存分配。
3
Moreover dynamicmemory allocation is under the control of the programmer, which inevitably means that memory deallocation is the burden of the programmer.