不必是-是

不必是

buˊ biˋ shiˋ

Doesn't have to be | It doesn't have to be

不必 | 不必 | 不必是

不必是堅固或物理的

buˊ biˋ shiˋ jian ˉ guˋ huoˋ wuˋ liˇ de˙

Does not have to be solid or physical | It doesn't have to be solid or physical

不必 | 不必 | 不必是 | 堅固 | 堅固 | 堅固或物理 | 物理 | 物理 | 的