为什么越南国旗也有五角星?这颗金星藏着不为人知的含义,越南国旗五角星的秘密,探寻不为人知的象征意义
Why does the flag of Vietnam also have a five-pointed star? This golden star holds an unknown meaning. The secret of the five-pointed star on the Vietnamese flag, exploring the unknown symbolic significance
以上为机器翻译结果，长、整句建议使用 人工翻译 。