Ministry of Education《Dictionary of Chinese Idioms》

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Homepage〉Idiom search〉辭典附錄〉Revised Mandarin Chinese Dictionary〉[長江天塹]

長江天塹

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Idiom長江天塹
Bopomofoㄔㄤˊ ㄐㄧㄤ ㄊㄧㄢ ㄑㄧㄢˋ
Pinyincháng jiāng tiān qiàn
Interpretation長江的形勢險要,有如天然的塹溝。《南史.卷七七.恩倖傳.孔範傳》:「長江天塹,古來限隔。」
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