名词
中文翻译：圆形石造碉堡
同义词：
['Round stone fortress', 'Round-stone fortress']
例句：
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1. The ancient city of Chengduis home to many round stone fortresses.
成都古城有许多圆形石造碉堡。
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2. The round stone fortress wasa symbol of the ancient civilization'sstrength.
圆形石造碉堡是古代文明力量的象征。
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3. The round stone fortresswas used as a defensive measure during thewar.
圆形石造碉堡在战争中被用作防御措施。