local t1= {10,11}function t1.Show() print("t1 show")endfunction GetT() return t1 endlocal t2 = GetT()t2[1] = 5 --修改t2会同步修改t1print(t1[1])t1[1] = 55 --修改t1会同步修改t2print(t2[1])t1 = nilprint(t2[1]) ----将t1置nil 为什么不会影响t2