齊格菲防線

Simplified: 齐格菲防线

qígéfēifángxiàn ㄑㄧˊ ㄍㄜˊ ㄈㄟ ㄈㄤˊ ㄒㄧㄢˋ

    • Siegfried Line, line of German military defenses during WWI and WWII

Character by character

Sources