99re国产精品,性欧美在线,看a级黄色毛片,三级国产毛片,亚洲欧洲综合av,最近好看中文字幕日产,精品一二三区在线观看

2019 Beijing Int'l Audiology Conference kicks off

Source: Xinhua| 2019-06-08 15:21:32|Editor: Li Xia
Video PlayerClose

CHINA-BEIJING-INTERNATIONAL AUDIOLOGY CONFERENCE (CN)

Visitors try hearing-aid devices at the 2019 Beijing International Audiology Conference in Beijing, capital of China, June 8, 2019. The 2019 Beijing International Audiology Conference kicked off here Saturday. (Xinhua/Lu Peng)

   Prev 1 2 3 4 5 6 Next  

KEY WORDS:
EXPLORE XINHUANET
010020070750000000000000011100001381267971