Every time a function is called, a new stack frame (an area of memory inside the stack) is used to support the call.

每当调用一个函数，就会使用一个新的堆栈帧来支持该调用。

youdao

Since you did not call any functions or use any local storage, you did not need a stack frame at all, so you can now just exit through the link register.

由于未调用任何函数，也未使用任何本地存储，所以您根本无需堆栈框架，并可通过链接寄存器退出。

youdao

This object must have a method called run(), which is executed by the runtime once the current frame in the call stack is specially marked as described above.

这个对象必须有一个名为 run() 的方法，在调用堆栈中的当前帧特别做了如上所述的标记时，由运行时执行这个方法。

youdao