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Cách đọc kèo châu ÂuµŮ֮ǰ4¥ӰԺһŮֻ10̶̬ȿɼһݵʱֵվ˼̳ȥԷ˵Ѳ֪ȥ֪̳ͨԱЭ
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ʾʮŵijͷչǶֺȫĸҪչڶʮŷ10֮۶ȫҪǰȫͱ̧ͷȥδһشʱ֮ʷֶ֤ȫ湲ͬʱͬҪԺӮΪĿʹϵԹʷʹΪƽЭ̽ԶΪͬ˹ͬԸĸΪȫϵзȫְ֧һɹķά巢Ϣ쾭ȫȷչƶʮڴٽ羭ǿȫȡûչijӵίĵǽ2۷ʱίĽǡδɲӰ족۹ע֮һܾܷ֡ΥΥ֤һ̶Ҳ̬й
˾ڽܼ߲ɷʱ˵˾ҵҪǼзѵѵڼѧԱʵʵзĿѵƼλнʸߵӸһ㱣н3000ԪĿǰƼҵձõ4000ԪعһƸú౸ʱͿнͨԱ(ATC)½ͨ¼