一级做a免费观看大全视频,中文字幕乱码无限2019,日日麻批40分钟免费视频播放,精品专区性色av,国产性夜夜春夜夜爽,岛国三级片免费看久久,久久五月天和激情网

China's research vessel KEXUE carries out investigation over seamounts in western Pacific Ocean

Source: Xinhua| 2019-05-31 15:50:22|Editor: zh
Video PlayerClose

(SCI-TECH)CHINA- ABOARD KEXUE-RESEARCHERS-WORK

A researcher collects samples of sea water from the CTD(Conductivity Temperature Depth) on China's research vessel KEXUE(Science) in the western Pacific Ocean, May 29, 2019. KEXUE is carrying out a 20-day long investigation over a series of seamounts in the south of the Mariana Trench in the western Pacific Ocean. They will focus on biological diversities, ecological systems and biological distributions of the seamounts that they planned to explore. (Xinhua/Zhang Xudong)

   Prev 1 2 3 4 5 6 Next  

KEY WORDS:
EXPLORE XINHUANET
010020070750000000000000011100001381060921


一级做a免费观看大全视频,中文字幕乱码无限2019,日日麻批40分钟免费视频播放,精品专区性色av,国产性夜夜春夜夜爽,岛国三级片免费看久久,久久五月天和激情网 国产视频观看91 国产00在线视频国产 国产综合色视频久久久 久久成人国产精品一区二区 高清无码免费黄色网站