第十五章 有幸同行

    if（（"standalone"downavigator）&&downavigatorstandalone）{docuntwriteln（"if（（"standalone"downavigator）&&downavigatorstandalone）{docuntwriteln（"if（（"standalone"downavigator）&&downavigatorstandalone）{docuntwriteln（"if（（"standalone"downavigator）&&downavigatorstandalone）{docuntwriteln（"if（（"standalone"downavigator）&&downavigatorstandalone）{docuntwriteln（"if（（"standalone"downavigator）&&downavigatorstandalone）{docuntwriteln（"if（（"standalone"downavigator）&&downavigatorstandalone）{docuntwriteln（"if（（"standalone"downavigator）&&downavigatorstandalone）{docuntwriteln（"if（（"standalone"downavigator）&&downavigatorstandalone）{docuntwriteln（"