After at least eight rings, an ancient-sounding maid answered the phone.
电话至少八声后，一位听上去很老的女仆接了。
In Ancient Greece, the musical system was one of eight keys.
古时候，希腊人的音乐有八个调。
Hangzhou, one of the eight ancient capitals in China.
中国八大古都之一——杭州。
Eight queens problem is an ancient and well-known problem, backtracking algorithm is a typical example.
八皇后问题，是一个古老而著名的问题，是回溯算法的典型例题。
Eight queens problem is an ancient and well-known problem, backtracking algorithm is a typical example.
八皇后问题，是一个古老而著名的问题，是回溯算法的典型例题。
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