Some amphitheaters could be filled with water so that ship battles could be fought.

一些這樣的圓形競(jìng)技場(chǎng)還會(huì)被注滿水以便表演海上作戰(zhàn)的船只能夠航行.

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In 7 th century BC, Romans inherited the traditions of Greece and built racetracks and unroofed amphitheaters.

公元前七世紀(jì)時(shí)羅馬人繼承希臘傳統(tǒng),就修建了賽馬場(chǎng)和露天競(jìng)技場(chǎng).

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