不重复排列无重复排列without: without the gates 在门外。 ...repetition: n. 1.反复,重复;重说,再讲;背诵;背诵文[诗];再 ...permutation with repetition: 重复排列combination without repetition: 非重复组合; 无复组合normal series without repetition: 无重复正规列下载手机词典可随时随地查词查翻译